History of Defunct Trunk Services

This article covers the chronological history of defunct basic* bus services, which is exported from the History of Bus Services page on SGWiki Buses.

Due to the ongoing revamp to SGWiki Buses, selected bus service history information has been exported to this article to preserve them, in the event that they may be removed by their moderators in the process.

For more detailed route information for selected defunct bus services, you may also refer to the following articles, which are currently under construction:

• Defunct Bus Services (1980 – 1994) – for basic* bus services discontinued between 1980 & 1994
• Defunct Bus Services (1995 – 2009) – for basic* bus services discontinued between 1995 & 2009
• Withdrawn Bus Services – for bus services discontinued since 2010

*Basic bus services refer to trunk, feeder, Express & City Direct routes run by public bus operators in Singapore.

---

For discontinued non-basic bus services (including those withdrawn before 2010), you may refer to their respective articles that provide more details on their background and operational periods:

• City Shuttle Services (1975 – 2007)
• SBS Blue Arrow Services (1975 – 1989)
• TIBS/SMRT NightRider Services (2000 – 2020)
• SBS/SBST Nite Owl Services (2000 – 2020)
• SMRT NightBus Services (2000 – 2003)
• SBST CityBuzz Services (2004 – 2006)
• SBST Chinatown Direct Services (2005 – 2020)
• SBST Parks Services (2005 – 2016)
• SBST Stadium Direct Services (2005 – 2010)
• SBST/SMRT Premium Services (2007 – 2017)
• SBST CityShopper Services (2007 – 2009)
• SBST/SMRT On Demand Public Bus (2018 – 2019)

---

Service 1 (1971 – 1989)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Changi Pt Ter and Delta Circus Ter under 1971 Bus Reorganisation.
	1973	11 March	Amended to ply Zion Rd towards Delta Circus Ter with the partial conversion of Kim Seng Rd to one-way traffic.
		1 July	Operations transferred to Singapore Bus Services.
	1974	1 December	Amended to ply New Upp Changi Rd, Bedok Plain, Bedok Hts, Upp East Coast Rd and Bedok Rd.
		8 December	Amended to ply the extended Robinson Rd, skipping Market St.
	1975	2 February	Amended to ply Tiong Bahru Rd and the extended Zion Rd towards Delta Circus Ter with the partial conversion of Kim Seng Rd and Outram Rd to one-way traffic.
		2 March	Amended to ply Sims Ave towards Changi Pt Ter with the conversion of Geylang Rd to one-way traffic.
		25 May	Amended to ply Bedok Wk and New Upp Changi Rd, skipping Bedok Hts and Upp East Coast Rd.
		TBC	Amended to new Changi Pt Ter.
		14 November	Amended to ply New Upp Changi Rd, skipping Bedok Plain and Bedok Wk.
	1976	15 February	Serves new staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
	1979	11 February	Amended to ply the extended Shenton Way towards Delta Circus Ter, skipping Parsi Rd and Anson Rd.
		14 October	Amended to ply Sims Ave East towards Changi Pt Ter with the conversion of Changi Rd to one-way traffic.
		11 November	Amended to Delta Fringe Car Pk.
	1980	20 January	Amended to ply Spottiswoode Pk Rd with the partial conversion of Cantonment Rd to one-way traffic.
	1981	15 June	Amended to ply Loyang Ave and Loyang Way with the partial closure of Upp Changi Rd.
		11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
		8 November	Revised to operate on weekdays and Saturdays only.
	1987	6 April	Skips removed bus stop before College Rd along Outram Rd.
	1989	5 November	Discontinued.

Service 1A (1971 – 1974)

Operator	Year	Date	Service changes
ABS	1971	1 August	Introduced between Changi Pt Ter and Delta Circus Ter.
	1973	11 March	Amended to ply Zion Rd towards Delta Circus Ter with the partial conversion of Kim Seng Rd to one-way traffic.
		1 July	Operations transferred to Singapore Bus Services.
	1974	3 February	Re-numbered Service 3 under 1974 Bus Rationalisation.

Service 2A (1971 – 1974)

Operator	Year	Date	Service changes
ABS	1971	1 August	Introduced between Changi Pt Ter and Commonwealth Ave Ter.
	1973	1 July	Operations transferred to Singapore Bus Services.
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 3 (1974 – 1991)

Operator	Year	Date	Service changes
	1974	3 February	Re-numbered from Service 1A as a service between Changi Pt Ter and Delta Circus Ter.
		1 December	Amended to ply New Upp Changi Rd, Bedok Plain, Bedok Hts, Upp East Coast Rd and Bedok Rd.
	1975	2 February	Amended to ply Tiong Bahru Rd and the extended Zion Rd towards Delta Circus Ter with the partial conversion of Kim Seng Rd and Outram Rd to one-way traffic.
		2 March	Amended to ply Sims Ave towards Changi Pt Ter with the conversion of Geylang Rd to one-way traffic.
		25 May	Amended to ply Bedok Wk and New Upp Changi Rd, skipping Bedok Hts and Upp East Coast Rd.
		TBC	Amended to new Changi Pt Ter.
	1976	15 July	Amended to ply Upp Changi Rd, skipping Telok Paku Rd and Nicoll Dr.
		2 August	Shortened to start from Bedok Sth Rd Ter and loop at New Bridge Rd.
	1979	8 April	Amended to Bedok Int and converted to a semi-express service.
		14 October	Amended to ply Sims Ave East towards Bedok Int with the conversion of Changi Rd to one-way traffic.
	1983	27 November	Integrated with Service 6 and amended to ply Kallang Rd/Crawford St and Victoria St/Nth Bridge Rd.
	1986	12 January	Converted to trunk service.
		6 July	Serves the bus stop outside Blk 414 along Sims Ave, skipping the bus stop outside Blk 416.
	1987	1 February	Extended to Jurong East Int.
		27 September	Amended to ply the extended Eu Tong Sen St towards Bedok Int to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St towards Bedok Int to facilitate the second stage of road expansion along New Bridge Rd.
	1988	20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
	1989	19 February	Serves new bus stop outside Blk 135 along Jurong East St 13.
		19 November	Serves new bus stop outside Kallang Stn along Sims Ave.
	1990	22 July	Serves additional bus stop outside Ellenborough Mkt along Eu Tong Sen St.
	1991	6 January	Discontinued under TransitLink Network Integration Exercise Phase 1.

Service 4 (1971 – 1974)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Changi Pt Ter and Lloyd Leas Est (Loop) under 1971 Bus Reorganisation.
	1973	1 July	Operations transferred to Singapore Bus Services.
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 4 (1979 – 1993)

Operator	Year	Date	Service changes
	1979	11 March	Introduced between Bedok Int and Lor 1 Geylang (Loop).
		14 October	Amended to ply Sims Ave East towards Bedok Int with the conversion of Changi Rd to one-way traffic.
	1980	11 February	Extended to loop at Moulmein Rd.
	1988	31 July	Extended to St. Michael’s Ter.
	1989	19 November	Serves new bus stop outside Kallang Stn along Sims Ave.
	1990	11 March	Integrated with Service 19 and extended to Pasir Ris Int.
	1992	29 November	Shortened to Tampines Int under TransitLink Network Integration Exercise Phase 10.
	1993	23 May	Integrated with Services 21 and 67 and discontinued under TransitLink Network Integration Exercise Phase 13.

Service 5 (1971 – 1999)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Upp Changi Rd 8¼ m.s. Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
		28 September	Amended to ply the extended Ganges Ave towards Upp Changi Rd 8¼ m.s. Ter.
	1972	11 June	Amended to ply the extended Upp Cross St with the partial conversion of Havelock Rd to one-way traffic, skipping New Bridge Rd.
	1973	TBC	Extended to Bt Timah Ter.
	1973	1 July	Operations transferred to Singapore Bus Services.
	1974	3 February	Shortened to Chai Chee Ter under 1974 Bus Rationalisation.
	1975	2 March	Amended to ply Sims Ave towards Chai Chee Ter with the conversion of Geylang Rd to one-way traffic.
	1977	17 October	Shortened to Geylang Fringe Car Pk and amended to ply Lavender St, Kallang Bahru, Boon Keng Rd and Lor 1 Geylang.
	1979	11 November	Amended to ply Ganges Ave towards Bt Timah Ter with the realignment of Delta Circus.
		30 December	Amended to ply Jln Anak Bt towards Geylang Fringe Car Pk with the partial conversion of Upp Bt Timah Rd to one-way traffic.
	1981	15 November	Amended to use new u-turn near Eng Neo Ave towards Geylang Fringe Car Pk, skipping the bus stop outside Turf City along Dunearn Rd and the bus stop after Third Ave along Bt Timah Rd.
	1986	1 June	Extended to Zhenghua Ter.
	1987	27 September	Amended to ply the extended Eu Tong Sen St towards Lor 1 Geylang Ter to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St towards Lor 1 Geylang Ter to facilitate the second stage of road expansion along New Bridge Rd.
		13 December	Serves new staggered bus stop opposite Peninsula Plaza along Nth Bridge Rd, skipping the bus stop outside St Andrew’s Cath.
	1989	25 June	Skips the bus stop after Tan Boon Chong Ave along Holland Rd.
		19 November	Serves new bus stop outside Kallang Stn along Sims Ave.
	1990	22 July	Serves additional bus stop outside Ellenborough Mkt along Eu Tong Sen St.
	1992	29 March	Amended to ply Holland Ave, Commonwealth Ave, Margaret Dr, Alexandra Rd, Lower Delta Rd, Jln Bt Merah, Kg Bahru Rd and Eu Tong Sen St/New Bridge Rd under TransitLink Network Integration Exercise Phase 6, skipping Queensway, Commonwealth Ave, Alexandra Rd, Ganges Ave and Havelock Rd.
	1993	11 April	Amended to ply Jln Sultan, Victoria St, Hill St and New Bridge Rd, skipping Sth Bridge Rd and Upp Cross St.
	1994	3 July	Amended to ply Kallang Rd and Victoria St, skipping Crawford St, Nth Bridge Rd and Jln Sultan.
	1995	17 September	Operations transferred to Trans Island Bus Services.
	1997	TBC	Serves additional bus stop after Jln Bt Merah along Kg Bahru Rd.
		7 December	Amended to ply Upp Pickering St, Sth Bridge Rd and Neil Rd with the partial closure of New Bridge Rd to facilitate the construction of Chinatown MRT station on the North East MRT Line.
		8 December	Skips the bus stop outside Kallang Stn along Sims Ave.
	1999	26 December	Discontinued under Bt Panjang LRT Rationalisation.

Service 6 (1977 – 1983)

Operator	Year	Date	Service changes
	1977	11 July	Introduced between Chai Chee Ter and Nth Bridge Rd (Loop) as a semi-express service.
	1979	25 February	Amended to Bedok Int.
		14 October	Amended to ply Sims Ave East towards Bedok Int with the conversion of Changi Rd to one-way traffic.
	1983	27 November	Integrated with Service 3 and discontinued.

Service 8 (1979 – 1989)

Operator	Year	Date	Service changes
	1979	26 February	Introduced between Bedok Int and Shenton Way (Loop) as a semi-express service, operating on weekdays and Saturdays only.
		14 October	Amended to ply Sims Ave East towards Bedok Int with the conversion of Changi Rd to one-way traffic.
	1981	11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
	1982	5 April	Amended to ply Bedok Sth Rd, Bedok Sth Ave 1 and ECP, skipping Connaught Dr, Collyer Quay, Raffles Quay and Shenton Way.
	1986	30 November	Extended to loop at Marina Ctr.
	1989	6 November	Discontinued.

Service 11 (1971 – 1988)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Bedok Rd Ter and Tg Pagar Ter under 1971 Bus Reorganisation.
	1973	1 July	Operations transferred to Singapore Bus Services.
	1974	3 February	Amended to Upp Changi Rd 8¼ ms (13.3km) Ter under 1974 Bus Rationalisation.
	1975	2 March	Amended to ply Sims Ave and Lor 1 Geylang towards Upp Changi Rd 13.3 km Ter with the conversion of Geylang Rd to one-way traffic.
	1979	28 May	Amended to New Bridge Rd Ter.
		TBC	Relocated to Upp Changi Rd 15.5km Ter.
	1980	16 June	Amended to Somapah Depot.
	1981	28 June	Amended to Somapah Int.
	1986	7 December	Serves new bus stop before Bedok Sth Ave 3 along Upp East Coast Rd.
	1987	6 June	Amended to relocated New Bridge Rd Ter.
		27 September	Amended to ply the extended Eu Tong Sen St towards Somapah Ter to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St towards Somapah Ter to facilitate the second stage of road expansion along New Bridge Rd.
	1988	23 October	Integrated with Service 12 and discontinued.

Service 12A (1979 – 1984)

Operator	Year	Date	Service changes
	1979	31 December	Introduced between Bedok Sth Ave 3 and North Bridge Rd (Loop) as a peak hour variant, operating daily.
	1981	TBC	Revised to operate on weekdays only.
	1984	2 September	Discontinued.

Service 13A (1971 – 1974)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Bedok Rd Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
	1973	1 July	Operations transferred to Singapore Bus Services.
	1974	3 February	Re-numbered Service 14 under 1974 Bus Rationalisation.

Service 15 (1975 – 1984)

Operator	Year	Date	Service changes
	1975	22 June	Introduced between Marine Terr Ter and Prince Edward Ter.
	1976	15 February	Serves new staggered bus stop outside Overseas Union Finance along Robinson Rd.
		14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
		4 July	Extended to loop at Shenton Way from Marine Terr Ter.
	1977	27 March	Amended to ply Marine Terr and Marine Cres towards Shenton Way, and amended to ply Marine Cres and Marine Parade Rd towards Marine Terr Ter with the relocation of Marine Terr Ter opposite Blk 52.
	1978	13 November	Amended to ply Marine Parade Rd and Amber Rd, skipping Joo Chiat Rd and East Coast Rd.
	1979	11 February	Amended to ply the extended Shenton Way, Keppel Rd and Anson Rd, skipping Parsi Rd.
	1981	5 July	Amended to Marine Parade Ter.
		11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
	1984	16 September	Integrated with Service 196 and discontinued.

Service 16E (1994 – 1997)

Operator	Year	Date	Service changes
	1994	31 January	Introduced between Bt Merah Int and Changi Airport as a peak hour uni-directional semi-express service on weekdays.
	1997	1 December	Re-numbered Service 36.

Service 17 (1981 – 1984)

Operator	Year	Date	Service changes
	1981	2 February	Introduced between Changi Pt Ter and Prince Edward Ter, operating on weekdays and Saturdays only.
		15 June	Amended to ply Loyang Ave and Loyang Way with the partial closure of Upp Changi Rd.
	1984	8 April	Discontinued.

Service 19 (1979 – 1981)

Operator	Year	Date	Service changes
	1979	TBC	Introduced between Siglap Rd and Prince Edward Ter.
	1980	12 May	Converted to peak-hour one-directional service on weekdays and Saturdays only.
	1981	11 August	Discontinued.

Service 19 (1988 – 1990)

Operator	Year	Date	Service changes
	1988	19 June	Introduced between Bedok Int and Pasir Ris Dr 6 (Loop).
	1989	10 December	Amended to Pasir Ris Int.
	1990	11 March	Integrated with Service 4 and discontinued.

Service 20 (1971 – 1989)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Fidelio St Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
ABS		6 December	Operations transferred to ABS.
	1973	1 July	Operations transferred to Singapore Bus Services.
			Amended to Chai Chee Ter.
	1974	8 December	Amended to ply the extended Robinson Rd, skipping Market St.
	1975	2 March	Amended to ply Sims Ave towards Chai Chee Ter with the conversion of Geylang Rd to one-way traffic.
	1976	15 February	Serves new staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
	1977	7 March	Extended to Ghim Moh Ter.
		17 May	Amended to ply Commonwealth Ave Extension.
	1978	15 January	Amended to ply Jln Sultan, skipping Sumbawa Rd.
	1979	11 February	Amended to ply the extended Shenton Way towards Ghim Moh Ter, skipping Parsi Rd and Anson Rd.
		14 October	Amended to ply Sims Ave East towards Chai Chee Ter with the conversion of Changi Rd to one-way traffic.
	1981	11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
	1985	8 September	Extended to Bedok Int with the closure of Chai Chee Ter.
	1988	3 January	Serves new staggered bus stop opposite Treasury Bldg along Shenton Way, skipping the bus stop opposite Marina Hse.
	1989	5 November	Integrated with Service 100 and discontinued.

Service 20 (1994 – 2000)

Operator	Year	Date	Service changes
	1994	TBC	Introduced between Sims Pl Ter and St. Wilfred Rd (Loop).
	2000	27 November	Integrated with Service 125 and discontinued.

Service 21 (1971 – 1981)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Fidelio St Ter and Delta Circus Ter under 1971 Bus Reorganisation.
		25 April	Extended to Commonwealth Ave Ter.
	1973	11 March	Amended to ply Zion Rd towards Commonwealth Ave Ter with the partial conversion of Kim Seng Rd to one-way traffic.
		1 July	Operations transferred to Singapore Bus Services.
			Amended to Chai Chee Ter.
	1975	2 February	Amended to ply Tiong Bahru Rd and the extended Zion Rd towards Commonwealth Ave Ter with the partial conversion of Kim Seng Rd and Outram Rd to one-way traffic.
		2 March	Amended to ply Sims Ave and Lor 1 Geylang towards Chai Chee Ter with the conversion of Geylang Rd to one-way traffic.
	1977	17 May	Amended to ply Commonwealth Ave Extension and Nth Buona Vista Rd towards Commonwealth Ave Ter.
		29 August	Amended to ply Holland Ave, Holland Dr and Nth Buona Vista Rd towards Commonwealth Ave Ter.
	1981	15 November	Discontinued.

Service 22 (1971 – 1984)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Fidelio St Ter and Alexandra Rd Ter.
	1972	TBC	Extended to Tg Berlayer Ter.
	1973	1 July	Operations transferred to Singapore Bus Services.
			Amended to Chai Chee Ter.
	1974	3 February	Amended to skip Fidelio St under 1974 Bus Rationalisation.
	1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
		2 March	Amended to ply Sims Ave towards Chai Chee Ter with the conversion of Geylang Rd to one-way traffic.
	1979	14 October	Amended to ply Sims Ave East towards Chai Chee Ter with the conversion of Changi Rd to one-way traffic.
	1984	22 April	Discontinued.

Service 28 (1983 – 1992)

Operator	Year	Date	Service changes
	1983	4 September	Introduced between Tampines Ter and New Bridge Rd (Loop).
	1987	3 May	Amended to terminate at New Bridge Rd Ter.
		6 June	Amended to the relocated New Bridge Rd Ter.
		27 September	Amended to ply the extended Eu Tong Sen St towards Tampines Ave 5 Ter to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St towards Tampines Ave 5 Ter to facilitate the second stage of road expansion along New Bridge Rd.
		29 November	Amended to Tampines Int.
		13 December	Serves new staggered bus stop opposite Peninsula Plaza along Nth Bridge Rd, skipping the bus stop outside St Andrew’s Cath.
	1988	20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
		23 October	Skips a pair of bus stops outside and opposite Tampines Stadium along Tampines Ave 5.
	1990	22 July	Serves additional bus stop outside Ellenborough Mkt along Eu Tong Sen St.
	1992	29 November	Integrated with Service 2 and discontinued under TransitLink Network Integration Exercise Phase 10.

Service 30/30A (1971 – 1974)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Changi Rd Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		2 May	Extended to Intl Rd Ter.
ABS		6 December	Operations transferred to ABS.
	1972	24 December	Amended to Jln Ahmad Ibrahim Ter.
	1973	1 July	Operations transferred to Singapore Bus Services.
			Amended to Chai Chee Ter.
	1974	3 February	Amended to skip Stamford Rd, Waterloo St and Bras Basah Rd and re-numbered Service 30 under 1974 Bus Rationalisation.

Service 31/31A (1971 – 1974)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Changi Rd Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		9 May	Extended to loop at Outram Pk.
	1973	1 July	Amended to Chai Chee Ter.
	1974	3 February	Amended to New Bridge Rd Ter and re-numbered Service 31 under 1974 Bus Rationalisation.

Service 31 (1974 – 1976)

Operator	Year	Date	Service changes
	1974	3 February	Re-numbered from Service 31/31A between Chai Chee Ter and New Bridge Rd Ter under 1974 Bus Rationalisation.
	1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
		2 March	Amended to ply Sims Ave and Lor 1 Geylang towards Chai Chee Ter with the conversion of Geylang Rd to one-way traffic.
	1976	2 August	Discontinued.

Service 34 (1995 – 2002)

Operator	Year	Date	Service changes
	1995	24 April	Introduced between Bedok Int and Changi Airport (Loop), operating on weekdays and Saturdays only.
	1996	TBC	Converted to bi-directional service between Bedok Int and Changi Airport PTB 1.
	2000	TBC	Serves new pair of bus stops outside and opposite SATS Flight Kitchen along Airport Blvd.
	2002	15 September	Discontinued.

Service 41 (1971 – 1991)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Telok Kurau Rd Ter and Redhill Cl Ter under 1971 Bus Reorganisation.
	1973	1 July	Extended to Chai Chee Ter.
	1974	3 February	Amended to ply Still Rd, skipping Telok Kurau Rd under 1974 Bus Rationalisation.
	1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
		2 March	Amended to ply Sims Ave and Lor 1 Geylang towards Chai Chee Ter with the conversion of Geylang Rd to one-way traffic.
	1976	18 April	Amended to ply Bedok Sth Rd, Bedok Sth Ave 1, Marine Parade Rd and Amber Rd, skipping Changi Rd, Still Rd and East Coast Rd.
		30 December	Amended to ply Paya Lebar Rd, Sims Ave and the extended Tg Katong Rd towards Chai Chee Ter.
	1985	7 April	Amended to Bedok Int.
		15 September	Integrated with Service 44 and extended to Bt Merah Int.
	1987	6 April	Skips removed bus stop before College Rd along Outram Rd.
		27 September	Amended to ply the extended Eu Tong Sen St towards Bedok Int to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St to facilitate the second stage of road expansion along New Bridge Rd.
	1988	20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
	1990	22 July	Serves additional bus stop outside Ellenborough Mkt along Eu Tong Sen St.
	1991	7 April	Integrated with Service 197 and discontinued under TransitLink Network Integration Exercise Phase 3.

Service 41A (1971 – 1974)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Joo Chiat Pl Ter and Redhill Cl Ter under 1971 Bus Reorganisation.
	1973	1 July	Extended to Chai Chee Ter.
	1974	3 February	Re-numbered Service 44 under 1974 Bus Rationalisation.

Service 42 (1971 – 1978)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Telok Kurau Rd Ter and Intl Rd Ter under 1971 Bus Reorganisation.
ABS		6 December	Operations transferred to ABS.
	1972	24 December	Extended to relocated Intl Rd Ter (near Fourth Lok Yang Rd).
	1973	1 July	Extended to Chai Chee Ter.
	1974	8 December	Amended to ply the extended Robinson Rd, skipping Market St.
	1976	15 February	Serves new staggered bus stop outside Overseas Union Finance along Robinson Rd.
		30 December	Amended to ply Paya Lebar Rd, Sims Ave and the extended Tg Katong Rd towards Chai Chee Ter.
	1978	1 June	Discontinued.

Service 43 (1971 – 1975)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Telok Kurau Rd Ter and Prince Edward Ter under 1971 Bus Reorganisation.
ABS		6 December	Operations transferred to ABS.
	1972	24 December	Extended to Benoi Rd Ter.
			Amended to ply Corporation Rd, Yung Ho Rd, Corporation Dr and Corporation Rd during off peak hours daily.
	1973	1 July	Extended to Chai Chee Ter.
	1974	3 February	Shortened to start from Prince Edward Ter, shortened to loop at Kallang Pk and converted to peak hour service on weekdays and Saturdays only under 1974 Bus Rationalisation.
		8 December	Amended to ply the extended Robinson Rd, skipping Market St.
	1975	8 June	Discontinued.

Service 44 (Apr – May 1971)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Telok Kurau Rd Ter and Delta Circus Ter under 1971 Bus Reorganisation.
		2 May	Discontinued.

Service 44 (1974 – 1985)

Operator	Year	Date	Service changes
	1974	3 February	Re-numbered from Service 41A as a service between Chai Chee Ter and Redhill Cl Ter.
	1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
		2 March	Amended to ply Sims Ave and Lor 1 Geylang towards Chai Chee Ter with the conversion of Geylang Rd to one-way traffic.
	1979	14 October	Amended to ply Still Rd and Sims Ave East towards Chai Chee Ter with the conversion of Changi Rd to one-way traffic, skipping Telok Kurau Rd.
		14 November	Amended to ply Telok Kurau Rd, skipping Still Rd.
	1981	15 November	Integrated with Service 63 and extended to Bt Merah Int.
	1985	15 September	Integrated with Service 33 and discontinued with the closure of Chai Chee Ter.

Service 45 (1971 – 1984)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Kallang Pk Ter and Haig Rd (Loop) under 1971 Bus Reorganisation.
		9 May	Extended to loop at Kreta Ayer Rd.
	1974	3 February	Amended to start from Chai Chee Ter and shortened to loop at Tg Rhu Rd under 1974 Bus Rationalisation.
	1979	14 October	Amended to ply Still Rd and Sims Ave East towards Chai Chee Ter with the conversion of Changi Rd to one-way traffic.
	1984	27 May	Discontinued.

Service 46 (1971 – 1975)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Tg Rhu Ter and Kreta Ayer Rd (Loop) under 1971 Bus Reorganisation.
	1974	8 December	Amended to ply the extended Robinson Rd, skipping Market St.
	1975	22 June	Discontinued.

Service 46 (1978 – 1981)

Operator	Year	Date	Service changes
	1978	1 April	Introduced between Geylang Fringe Car Pk and Stadium Wk (Loop).
	1981	11 November	Discontinued.

Service 50 (1971 – 1991)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Kaki Bt Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		9 May	Extended to Lengkok Bahru Ter.
	1974	3 February	Amended to ply Sims Ave and Paya Lebar Rd under 1974 Bus Rationalisation, skipping Geylang Rd and Changi Rd.
		8 December	Amended to skip Market St.
	1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
		2 March	Amended to ply Geylang Rd towards Lengkok Bahru Ter with the conversion of Sims Ave to one-way traffic.
	1976	15 February	Serves new staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
	1978	15 January	Amended to ply Jln Sultan, skipping Sumbawa Rd.
	1979	11 February	Amended to ply the extended Shenton Way towards Lengkok Bahru Ter, skipping Parsi Rd and Anson Rd.
		23 December	Amended to Bt Merah Ctrl Ter.
	1980	20 January	Amended to ply Spottiswoode Pk Rd with the partial conversion of Cantonment Rd to one-way traffic.
		28 September	Amended to Bt Merah Int.
	1981	11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
	1984	17 June	Amended to Jln Eunos Ter.
	1987	22 March	Amended to Eunos Ter.
		6 April	Skips removed bus stop before College Rd along Outram Rd.
	1989	10 December	Amended to Eunos Int.
	1991	6 January	Discontinued under TransitLink Network Integration Exercise Phase 1.

Service 50A (1971 – 1974)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Kaki Bt Ter and Stamford Rd (Loop) under 1971 Bus Reorganisation.
	1974	3 February	Extended to Alexandra Rd (Alexandra Hosp) Ter and re-numbered Service 53 under 1974 Bus Rationalisation.

Service 52 (1971 – 1974)

Operator	Year	Date	Service changes
ABS	1971	3 July	Introduced between Jln Eunos Ter and Tg Pagar Rd Ter.
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 53 (1974 – 1983)

Operator	Year	Date	Service changes
	1974	3 February	Re-numbered from Service 50A as a service between Kaki Bt Ter and Alexandra Rd (Alexandra Hosp) Ter.
	1975	2 March	Amended to ply Sims Ave towards Kaki Bt Ter with the conversion of Geylang Rd to one-way traffic.
	1978	15 January	Amended to ply Jln Sultan, skipping Sumbawa Rd.
	1983	20 February	Discontinued.

Service 54 (1985 – 1987)

Operator	Year	Date	Service changes
	1985	29 December	Introduced between Hougang Int and Jln Eunos (Loop).
	1987	22 March	Integrated with Service 51 and discontinued.

Service 55 (1980 – 1988)

Operator	Year	Date	Service changes
	1980	11 February	Introduced between Sth Canal Ter and Alexandra Rd (Loop).
		9 March	Amended to loop at Mei Chin Rd.
		23 November	Amended to ply Leng Kee Rd and Tiong Bahru Rd.
	1984	30 December	Amended to ply Alexandra Rd, skipping Leng Kee Rd.
	1988	18 December	Integrated with Service 195 and discontinued.

Service 57 (1983 – 1987)

Operator	Year	Date	Service changes
	1983	25 June	Introduced between Buona Vista Ter and Changi Airport as a peak hour service on weekdays & Saturdays under Changi Airport Bus Plan 1983, replacing former SSB Service 757.
	1987	6 April	Skips removed bus stop before College Rd along Outram Rd.
		19 April	Discontinued.

Service 57 (1988 – 1992)

Operator	Year	Date	Service changes
	1988	22 August	Introduced between Bishan Ter and Sin Ming Dr (Loop), replacing Service 353.
		20 November	Amended to ply Sin Ming Rd, Sin Ming Dr, Sin Ming Ave and Upp Thomson Rd in both directions.
	1989	30 April	Amended to Bishan Int.
	1990	21 February	Skips removed bus stop opposite Jasmine Rd along Upp Thomson Rd.
	1992	3 May	Discontinued under TransitLink Network Integration Exercise Phase 7 with the introduction of Townlink Service 410G/410W.

Service 58 (1987 – 1990)

Operator	Year	Date	Service changes
	1987	18 January	Introduced between Bishan Ter and Marina Ctr (Loop).
	1989	30 April	Amended to Bishan Int.
	1990	2 September	Integrated with Service 56 and discontinued.

Service 59 (1988 – 1999)

Operator	Year	Date	Service changes
	1988	10 July	Introduced between Bishan Ter and Jln Kayu Ter.
	1989	30 April	Amended to Bishan Int.
	1992	3 May	Shortened to Ang Mo Kio Int and amended to loop at Jln Kayu under TransitLink Network Integration Exercise Phase 7.
	1995	17 December	Operations transferred to TIBS. Amended to start from Jln Kayu Ter and loop at Ang Mo Kio Int.
	1998	TBC	Skips a pair of temporarily closed bus stops before and after Seletar West Farmway 1 along Jln Kayu.
	1999	21 February	Extended to Sengkang Ter and re-numbered Service 866.

Service 60 (Apr – May 1971)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between MacPherson Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		9 May	Integrated with Service 60A and renumbered Service 60/60A.

Service 60A (Apr – May 1971)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between MacPherson Ter and Stamford Rd (Loop) under 1971 Bus Reorganisation.
		9 May	Integrated with Service 60 and discontinued.

Service 60/60A (1971 – 1974)

Operator	Year	Date	Service changes
STC	1971	9 May	Re-numbered from Service 60 as a service between MacPherson Ter and Prince Edward Ter.
UBC		6 December	Operations transferred to UBC.
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 60 (1976 – 1991)

Operator	Year	Date	Service changes
	1976	16 August	Introduced between MacPherson Ter and Shenton Way (Loop) as a semi-express service, operating on weekdays and Saturdays only.
	1979	11 February	Amended to ply the extended Shenton Way, Keppel Rd and Anson Rd, skipping Parsi Rd.
	1981	11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
	1985	29 April	Amended to ply Geylang East Ctrl and re-routed to start from Prince Edward Ter and loop at Circuit Rd, skipping Merpati Rd/Mattar Rd.
	1987	5 January	Skips the bus stop outside Clifford Ctr along Collyer Quay.
		28 June	Amended to Shenton Way Ter.
	1991	26 May	Discontinued under TransitLink Network Integration Exercise Phase 5.

Service 63 (1971 – 1981)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Gagak Selari Barat Ter and MacPherson Ter under 1971 Bus Reorganisation.
	1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
		2 March	Amended to ply Sims Ave towards MacPherson Ter with the conversion of Geylang Rd to one-way traffic.
	1976	4 January	Extended to Alexandra Rd Ter.
	1977	12 April	Amended to ply Tiong Bahru Rd and Lower Delta Rd, skipping Jln Membina and Kim Tian Rd.
	1981	15 February	Amended to Bt Merah Int.
		5 July	Amended to ply Cantonment Rd towards Bt Merah Int, skipping a portion of Neil Rd and New Bridge Rd.
		15 November	Integrated with Service 44 and discontinued.

Service 68 (2003 – 2008)

Operator	Year	Date	Service changes
	2003	16 June	Introduced between Tampines Int and Tampines St 92 (Loop) as a peak hour service on weekdays.
	2006	TBC	Last bus (AM peak) brought forward to 0920 hrs.
	2008	11 August	Discontinued.

Service 71 (1971 – 1992)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Yio Chu Kang Rd Ter and Lor 5 Geylang Ter under 1971 Bus Reorganisation.
	1975	2 March	Amended to ply Geylang Rd towards Lor 5 Geylang Ter with the conversion of Sims Ave to one-way traffic.
	1977	17 October	Extended to Geylang Fringe Car Pk.
	1979	26 March	Amended to ply Yio Chu Kang Rd, skipping Jln Woodbridge.
		26 October	Amended to Old Upp Thomson Ter.
	1980	13 October	Amended to ply Ang Mo Kio Ave 9 and Ang Mo Kio Ave 4 with the partial closure of Yio Chu Kang Rd to facilitate redevelopment.
	1981	5 June	Amended to ply the diverted Yio Chu Kang Rd, skipping Ang Mo Kio Ave 9.
	1992	3 May	Integrated with Service 70/70X and discontinued under TransitLink Network Integration Exercise Phase 7.

Service 72 (1971 – 1992)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Serangoon Gdn Ter and Tg Rhu Ter under 1971 Bus Reorganisation.
	1976	30 December	Amended to ply Sims Ave/Geylang Rd and the extended Tg Katong Rd, skipping Guillemard Rd.
	1977	31 October	Amended to skip Chartwell Dr, Burghley Dr, Berwick Dr, Tavistock Ave, Hemsley Ave and Kensington Pk Rd with the introduction of Service 217.
	1984	27 May	Amended to loop at Tg Rhu Rd from Serangoon Gdn Ter.
	1988	13 March	Amended to Serangoon Int.
	1992	3 May	Integrated with Services 76 & 158 and discontinued under TransitLink Network Integration Exercise Phase 7.

Service 73/73A (1971 – 1974)

Operator	Year	Date	Service changes
ABS	1971	16 June	Introduced between Yio Chu Kang Rd Ter and Tg Pagar Ter.
	1972	18 June	Amended to ply Bendemeer Rd towards Tg Pagar Ter with the conversion of Serangoon Rd to one-way traffic.
	1974	3 February	Shortened to Toa Payoh Town Ctr Ter and re-numbered Service 73 under 1974 Bus Rationalisation.

Service 74A (1994 – 1995)

Operator	Year	Date	Service changes
	1994	19 June	Introduced between Upp Serangoon Ter and Ang Mo Kio Ave 3 (Ang Mo Kio Stn) as a route variant of Service 74.
		17 December	Amended to Hougang Ctrl Int.
	1995	8 January	Integrated with Service 165 and discontinued.

Service 76 (1981 – 1988)

Operator	Year	Date	Service changes
	1981	24 November	Introduced between Clementi Int and Jurong East Ctrl (Loop).
	1982	12 September	Amended to ply Jurong East Ctrl, Jurong East Ave 1 and Jurong Town Hall Rd.
	1985	30 June	Amended to start from Jurong East Int and loop at Clementi Int.
	1988	13 March	Integrated with Service SS2 and discontinued.

Service 77 (1980 – 1986)

Operator	Year	Date	Service changes
	1980	17 August	Introduced between Ang Mo Kio Ave 3 Ter and Bendemeer Rd (Loop).
	1981	5 July	Amended to Ang Mo Kio Ctrl 2 Ter.
	1983	10 April	Amended to Ang Mo Kio Int.
	1986	16 March	Integrated with Service 162 and discontinued.

Service 78 (1980 – 1983)

Operator	Year	Date	Service changes
	1980	17 November	Introduced between Clementi Int and Queensway (Loop) as a peak hour service on weekdays and Saturdays.
	1983	28 February	Discontinued.

Service 79 (1983 – 1984)

Operator	Year	Date	Service changes
	1983	27 February	Introduced between Jurong East Ter and Nth Bridge Rd (Loop).
	1984	1 July	Integrated with Service 147 and discontinued.

Service 79 (1985 – 1988)

Operator	Year	Date	Service changes
	1985	16 June	Introduced between Jurong East Ter and Empress Pl (Loop).
		30 June	Amended to Jurong East Int.
	1986	30 November	Extended to Marina Ctr Ter.
	1988	3 January	Serves staggered bus stop opposite Treasury Bldg along Shenton Way, skipping the bus stop opposite Marina Hse.
		11 January	Serves merged bus stop along Ayer Rajah Rd.
		18 December	Integrated with Service 97 and discontinued.

Service 80 (1971 – 1985)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Upp Changi Ter and Prince Edward Ter under 1971 Bus Reorganisation.
	1972	18 June	Amended to ply Bendemeer Rd towards Prince Edward Ter with the conversion of Serangoon Rd to one-way road.
	1974	8 December	Amended to skip Market St.
	1976	15 February	Serves staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
		14 March	Serves staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
	1978	15 January	Amended to ply Jln Sultan, skipping Sumbawa Rd.
	1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
	1985	23 June	Discontinued.

Service 80 (1996 – 1998)

Operator	Year	Date	Service changes
	1996	3 September	Introduced between Tampines Int and Hougang Ctrl Int.
	1998	30 March	Integrated with Service 72 and discontinued.

Service 80A (1971 – 1974)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Upp Serangoon Rd 10.5 km Ter and Prince Edward Ter under 1971 Bus Reorganisation.
	1972	18 June	Amended to ply Bendemeer Rd towards Prince Edward Ter with the conversion of Serangoon Rd to one-way road.
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 81A (1971 – 1974)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Upp Serangoon Rd 10.5 km Ter and New Bridge Rd Ter under 1971 Bus Reorganisation.
	1972	18 June	Amended to ply Bendemeer Rd towards New Bridge Rd Ter with the conversion of Serangoon Rd to one-way traffic.
	1974	3 February	Amended to skip Jln Besar, Bencoolen St and Bras Basah Rd and re-numbered Service 85 under 1974 Bus Rationalisation.

Service 83 (1971 – 1992)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Punggol Ter and New Bridge Rd Ter under 1971 Bus Reorganisation.
	1972	18 June	Amended to ply Bendemeer Rd towards New Bridge Rd Ter with the conversion of Serangoon Rd to one-way traffic.
	1974	1 October	Serves merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
	1987	6 June	Amended to the relocated New Bridge Rd Ter.
		27 September	Amended to ply the extended Eu Tong Sen St towards Punggol Rd Ter to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St towards Punggol Rd Ter to facilitate the second stage of road expansion along New Bridge Rd.
		13 December	Serves new staggered bus stop opposite Peninsula Plaza along Nth Bridge Rd, skipping the bus stop outside St Andrew’s Cath.
	1988	20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
	1990	2 September	Integrated with Service 101 and amended to ply Hougang Ave 8, Hougang Ave 2, Yio Chu Kang Lk, Yio Chu Kang Rd and Serangoon Ctrl.
	1992	29 March	Integrated with Service 147 and discontinued under TransitLink Network Integration Exercise Phase 6.

Service 84 (1971 – 1999)

Operator	Year	Date	Service changes
ABS	1971	3 July	Introduced between Upp Serangoon Ter and Upp Cross St (Loop).
	1974	3 February	Extended to Tg Pagar Ter under 1974 Bus Rationalisation.
	1975	2 March	Amended to ply Sims Ave towards Upp Serangoon Ter with the conversion of Geylang Rd to one-way traffic.
	1979	1 August	Amended to temporary terminal at Lim Teck Kim Rd with the closure of Tg Pagar Ter.
		23 December	Amended to Anson Rd Ter.
	1980	20 January	Amended to ply Hoe Chiang Rd towards Anson Rd Ter, skipping Lim Teck Kim Rd
	1982	13 June	Amended to ply Aljunied Way and Aljunied Rd.
	1985	13 January	Extended to World Trade Ctr Ter.
	1987	27 September	Amended to ply the extended Eu Tong Sen St towards Upp Serangoon Ter to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St towards Upp Serangoon Ter to facilitate the second stage of road expansion along New Bridge Rd.
		13 December	Serves new staggered bus stop opposite Peninsula Plaza along Nth Bridge Rd, skipping the bus stop outside St Andrew’s Cath.
	1990	22 July	Serves additional bus stop outside Ellenborough Mkt along Eu Tong Sen St.
	1994	18 December	Amended to Hougang Ctrl Int.
	1996	TBC	Serves additional bus stop outside Kallang Stn along Sims Ave.
	1998	24 May	Amended to Hougang Ctrl Temp Int.
	1999	12 December	Integrated with Service 864 to form Service 80 and discontinued.

Service 84 (2003 – 2005)

Operator	Year	Date	Service changes
	2003	15 September	Introduced between Punggol Ctrl (Punggol Stn) and Punggol East (Loop) as a peak hour one-directional service, operating on weekdays and Saturdays only.
		30 November	Amended to Punggol Temp Int.
	2005	12 March	Discontinued under Punggol East LRT Rationalisation.

Service 85 (1974 – 1991)

Operator	Year	Date	Service changes
	1974	3 February	Re-numbered from Service 81A as a service between Upp Serangoon Rd 10.5 km Ter and New Bridge Rd Ter under 1974 Bus Rationalisation.
	1978	24 April	Amended to ply Jln Kolam Ayer and Kallang Bahru and shortened to loop at Sims Ave.
	1982	11 June	Amended to ply Bendemeer Rd and Geylang Bahru, skipping Jln Kolam Ayer.
	1983	30 October	Amended to Hougang Int.
	1991	6 January	Discontinued under TransitLink Network Integration Exercise Phase 1.

Service 85 (1999 – 2003)

Operator	Year	Date	Service changes
	1999	12 December	Re-numbered from Service 865 as a service between Sengkang Ter and World Trade Ctr Ter.
	2001	28 April	Amended to Sengkang Temp Int.
	2002	7 July	Skips the bus stop opposite Mandarin Singapore along Orchard Rd.
		TBC	Serves new pair of bus stops after Sommerville Rd and after Sunshine Lodge along Upp Serangoon Rd.
	2003	18 January	Amended to Sengkang Integrated Transport Hub.
		20 June	Serves new pair of bus stops outside Potong Pasir Stn along Upp Serangoon Rd.
		27 July	Discontinued under North East MRT Line Rationalisation Phase 2.

Service 86 (1977 – 1983)

Operator	Year	Date	Service changes
	1977	13 June	Introduced between Tampines Way Ter and Shenton Way (Loop) as a semi-express service operating on weekdays and Saturdays only.
	1979	11 February	Amended to ply the extended Shenton Way, Keppel Rd and Anson Rd, skipping Parsi Rd.
	1981	11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
	1983	30 October	Amended to Hougang Int.
		18 December	Integrated with Service 97 and discontinued.

Service 90 (1971 – 1989)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Paya Lebar Airport Ter and Jln Bt Merah Ter under 1971 Bus Reorganisation.
		14 September	Extended to Commonwealth Ave Ter.
	1974	3 February	Amended to ply MacPherson Rd and Aljunied Rd under 1974 Bus Rationalisation, skipping Paya Lebar Rd.
	1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
		2 March	Amended to ply Sims Ave towards Paya Lebar Airport Ter with the conversion of Geylang Rd to one-way traffic.
	1976	1 October	Amended to Jln Ang Teng Ter.
	1977	17 May	Amended to ply Commonwealth Ave Extension and Nth Buona Vista Rd towards Commonwealth Ave Ter.
		29 August	Amended to ply Holland Ave, Holland Dr and Nth Buona Vista Rd towards Commonwealth Ave Ter.
	1981	30 June	Amended to loop at Airport Rd with the closure of Jln Ang Teng Ter.
	1982	27 May	Amended to Buona Vista Ter.
	1987	6 April	Skips removed bus stop before College Rd along Outram Rd.
		27 September	Amended to ply the extended Eu Tong Sen St towards Airport Rd to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St to facilitate the second stage of road expansion along New Bridge Rd.
	1988	20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
	1989	5 November	Discontinued.

Service 91 (1971 – 1989)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Paya Lebar Airport Ter and Prince Edward Ter under 1971 Bus Reorganisation.
UBC		6 December	Operations transferred to UBC.
	1974	3 February	Amended to ply Paya Lebar Rd, Tg Katong Rd, Dunman Rd, Old Airport Rd and Mountbatten Rd under 1974 Bus Rationalisation, skipping MacPherson Rd and Aljunied Rd.
		8 December	Amended to ply the extended Robinson Rd, skipping Market St.
	1976	15 February	Serves new staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
		14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
		1 October	Amended to Jln Ang Teng Ter.
		30 December	Amended to ply Sims Ave/Geylang Rd and the extended Tg Katong Rd, skipping Guillemard Rd.
	1978	15 January	Amended to ply Jln Sultan, skipping Sumbawa Rd.
	1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
	1981	30 June	Amended to loop at Airport Rd with the closure of Jln Ang Teng Ter.
		5 July	Shortened to Geylang Fringe Car Pk.
	1989	5 November	Discontinued.

Service 92 (1971 – 1993)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Paya Lebar Airport Ter and Gagak Selari Barat Ter under 1971 Bus Reorganisation.
	1972	18 June	Amended to ply Bendemeer Rd towards Gagak Selari Barat Ter with the conversion of Serangoon Rd to one-way traffic.
	1973	11 March	Amended to ply Hoot Kiam Rd towards Jln Ang Teng Ter with the conversion of Irwell Bank Rd to one-way road.
	1974	3 February	Extended to Alexandra Rd (Alexandra Hosp) Ter under 1974 Bus Rationalisation.
		24 February	Amended to ply Grange Rd and Orchard Blvd towards Alexandra Rd (Alexandra Hosp) Ter with the conversion of Orchard Rd to one-way road.
		1 October	Serves new bus stop outside Nan Hwa Girls’ High Sch along Bencoolen St.
			Serves merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
	1976	1 October	Amended to Jln Ang Teng Ter.
	1981	30 June	Amended to loop at Airport Rd with the closure of Jln Ang Teng Ter.
	1985	28 April	Integrated with Service 185 and extended to Clementi Int.
	1988	11 January	Serves merged bus stop along Ayer Rajah Rd.
		8 March	Amended to ply Clementi Ave 3 with the abolition of right turning from Clementi Ave 3 to Commonwealth Ave West.
	1992	19 July	Amended to ply Orchard Lk due to the closure of Grange Rd to facilitate road expansion works.
	1993	23 May	Integrated with Service 14 and discontinued under TransitLink Network Integration Exercise Phase 13.

Service 92M (2015 – 2024)

Refer to this article.

Service 93A (1971 – 1974)

Operator	Year	Date	Service changes
UBC	1971	25 April	Introduced between Jln Ang Teng Ter and Jln Bt Merah Ter.
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 94 (1971 – 1989)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Jln Kolam Ayer Ter and Ulu Pandan Ter under 1971 Bus Reorganisation.
		9 May	Amended to ply Tiong Bahru Rd and Tanglin Rd.
ABS		6 December	Operations transferred to ABS.
	1972	18 June	Amended to ply Bendemeer Rd towards Ulu Pandan Ter with the conversion of Serangoon Rd to one-way traffic.
	1974	8 December	Amended to ply the extended Robinson Rd, skipping Market St.
	1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
	1976	15 February	Serves staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
		TBC	Amended to ply Kallang Bahru, skipping Serangoon Rd/Bendemeer Rd.
		13 December	Extended to Sims Pl Ter.
	1977	17 October	Shortened to loop at Shenton Way from Sims Pl Ter with the introduction of Service 188.
	1979	11 February	Amended to ply the extended Shenton Way, Keppel Rd and Anson Rd, skipping Parsi Rd.
	1981	11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
	1982	22 May	Amended to ply Aljunied Rd, MacPherson Rd, Bendemeer Rd and Geylang Bahru towards Shenton Way, skipping Jln Kolam Ayer and amended to ply Bendemeer Rd, Whampoa North, Serangoon Rd, MacPherson Rd and Aljunied Rd towards Sims Pl Ter.
	1988	3 January	Serves new staggered bus stop opposite Treasury Bldg along Shenton Way, skipping the bus stop opposite Marina Hse.
	1989	11 June	Discontinued.

Service 95 (1971 – 1988)

Operator	Year	Date	Service changes
UBC	1971	22 April	Introduced between Paya Lebar Airport Ter and Havelock Rd (Loop).
	1972	11 June	Amended to ply the extended Upp Cross St with the partial conversion of Havelock Rd to one-way traffic, skipping New Bridge Rd.
	1973	11 March	Amended to ply Hoot Kiam Rd towards Jln Ang Teng Ter with the conversion of Irwell Bank Rd to one-way traffic.
	1974	3 February	Extended to Ulu Pandan Ter and amended to Lor 4 Toa Payoh, Toa Payoh Ctrl and Lor 2 Toa Payoh under 1974 Bus Rationalisation.
	1976	1 October	Amended to Jln Ang Teng Ter.
	1977	19 June	Amended to ply Paterson Rd, Orchard Blvd and Grange Rd towards Ulu Pandan Ter with the full conversion of Orchard Rd to one-way traffic.
	1980	20 January	Amended to ply Thomson Flyover towards Ulu Pandan Ter, skipping Thomson Rd and a portion of Whitley Rd.
	1981	15 June	Extended to Clementi Int.
		30 June	Amended to loop at Airport Rd with the closure of Jln Ang Teng Ter.
	1986	16 November	Serves new staggered bus stop outside Thong Teck Bldg along Scotts Rd, skipping the bus stop outside Metro Orchard.
	1988	8 March	Amended to ply Clementi Ave 3 with the abolition of right turning from Clementi Ave 3 to Commonwealth Ave West.
		13 March	Discontinued with the introduction of Service 105.

Service 100 (Apr – May 1971)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Serangoon Gdn Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		9 May	Integrated with Service 100A and re-numbered Service 100/100A.

Service 100A (Apr – May 1971)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Serangoon Gdn Ter and Finlayson Green (Loop) under 1971 Bus Reorganisation.
		9 May	Integrated with Service 100 and discontinued

Service 100/100A (1971 – 1974)

Operator	Year	Date	Service changes
STC	1971	9 May	Re-numbered from Service 100 as a service between Serangoon Gdn Ter and Prince Edward Ter.
ABS		6 December	Operations transferred to Associated Bus Service (ABS).
	1974	3 February	Re-numbered Service 100 under 1974 Bus Rationalisation.

Service 101 (1971 – 1990)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Serangoon Gdn Ter and New Bridge Rd Ter under 1971 Bus Reorganisation.
ABS		6 December	Operations transferred to ABS.
	1972	18 June	Amended to ply Bendemeer Rd towards New Bridge Rd Ter with the conversion of Serangoon Rd to one-way traffic.
	1974	1 October	Serves new merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
	1977	31 October	Amended to skip Chartwell Dr, Burghley Dr and Berwick Dr with the introduction of Service 217.
	1981	10 May	Skips bus stop before Braddell Flyover along Lor Chuan.
	1983	6 February	Amended to ply CTE towards Serangoon Gdn Ter with the closure of temporary slip road between Braddell Rd and Lor Chuan.
		20 June	Amended back to ply Lor Chuan towards Serangoon Gdn Ter with the opening of new link road between Braddell Rd and Lor Chuan under Braddell Flyover.
	1987	3 May	Amended to terminate at New Bridge Rd Ter.
		6 June	Amended to the relocated New Bridge Rd Ter.
		27 September	Amended to ply the extended Eu Tong Sen St towards Serangoon Gdn Ter to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St towards Serangoon Gdn Ter to facilitate the second stage of road expansion along New Bridge Rd.
	1988	13 March	Amended to Serangoon Int.
		20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
	1990	2 September	Integrated with Service 83 and discontinued.

Service 101A (1971 – 1974)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Serangoon Gdn Ter and New Bridge Rd Ter under 1971 Bus Reorganisation.
ABS		6 December	Operations transferred to ABS.
	1972	18 June	Amended to ply Bendemeer Rd towards New Bridge Rd Ter with the conversion of Serangoon Rd to one-way road.
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 102 (1971 – 1977)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Serangoon Gdn Ter and Prince Edward Ter under 1971 Bus Reorganisation.
UBC		6 December	Operations transferred to UBC.
	1972	18 June	Amended to ply Bendemeer Rd towards Prince Edward Ter with the conversion of Serangoon Rd to one-way traffic.
	1974	3 February	Converted to semi-express service under 1974 Bus Rationalisation.
		8 December	Amended to ply the extended Robinson Rd, skipping Market St.
	1976	15 February	Serves new staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
		14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
	1977	31 October	Discontinued.

Service 102 (1981 – 1983)

Operator	Year	Date	Service changes
	1981	2 March	Introduced between Jln Kayu Ter and New Bridge Rd Ter, operating on weekdays and Saturdays only.
	1983	14 November	Discontinued.

Service 102A (1971 – 1974)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Serangoon Gdn Ter and Prince Edward Ter under 1971 Bus Reorganisation.
UBC		6 December	Operations transferred to UBC.
	1972	18 June	Amended to ply Bendemeer Rd towards Prince Edward Ter with the conversion of Serangoon Rd to one-way traffic.
	1974	3 February	Re-numbered Service 105 under 1974 Bus Rationalisation.

Service 103A (1971 – 1974)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Serangoon Gdn Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
	1972	18 June	Amended to ply Bendemeer Rd towards Commonwealth Ave Ter with the conversion of Serangoon Rd to one-way traffic.
	1974	3 February	Re-numbered Service 106 under 1974 Bus Rationalisation.

Service 103W/103M (2003 – 2011)

Refer to this article.

Service 104 (1971 – 1993)

Operator	Year	Date	Service changes
UBC	1971	23 April	Introduced between Serangoon Gdn Ter and Upp Cross St (Loop).
		5 July	Amended to ply Chartwell Dr, Burghley Dr, Berwick Dr and Serangoon Gdn Way towards Upp Cross St.
	1972	11 June	Amended to ply the extended Upp Cross St with the partial conversion of Havelock Rd to one-way traffic, skipping New Bridge Rd.
	1973	11 March	Amended to ply Hoot Kiam Rd towards Serangoon Gdn Ter with the conversion of Irwell Bank Rd to one-way traffic.
	1977	31 October	Amended to skip Chartwell Dr, Burghley Dr and Berwick Dr with the introduction of Service 217.
	1983	6 February	Amended to ply CTE towards Serangoon Gdn Ter with the closure of temporary slip road between Braddell Rd and Lor Chuan.
		20 June	Amended back to ply Lor Chuan towards Serangoon Gdn Ter with the opening of new link road between Braddell Rd and Lor Chuan under Braddell Flyover.
	1986	28 September	Amended to ply Keng Lee Rd, Kg Java Rd and Bt Timah Rd, skipping Cavenagh Rd.
	1987	13 December	Serves new bus stop outside Newton Stn along Scotts Rd.
	1988	13 March	Amended to Serangoon Int.
	1992	3 May	Extended to New Bridge Rd Ter and amended to ply Ang Mo Kio Ave 1 and Bishan Rd under TransitLink Network Integration Exercise Phase 7, skipping Lor Chuan.
	1993	5 December	Integrated with Service 134 to form Service 54 and discontinued under TransitLink Network Integration Exercise Phase 14.

Service 105 (1974 – 1977)

Operator	Year	Date	Service changes
	1974	3 February	Re-numbered from Service 102A as a service between Serangoon Gdn Ter and Prince Edward Ter.
		8 December	Amended to ply the extended Robinson Rd, skipping Market St.
	1976	15 February	Serves new staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
		14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
	1977	31 October	Discontinued.

Service 110 (1971 – 1977)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Upp Serangoon Rd 10.5 km Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		9 May	Amended to ply Mountbatten Rd, Kallang Rd, Crawford St, Nth Bridge Rd and Bras Basah Rd, skipping Nicoll Highway.
ABS		6 December	Operations transferred to ABS.
	1974	8 December	Amended to ply the extended Robinson Rd, skipping Market St.
	1975	2 March	Amended to ply Sims Ave and Lor 1 Geylang towards Upp Serangoon Rd 10.5 km Ter with the conversion of Geylang Rd to one-way traffic.
		21 July	Amended to ply St. Andrew’s Rd and Stamford Rd, skipping Coleman St and Hill St.
	1976	15 February	Serves new staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
		14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
	1977	16 May	Integrated with Service 70 and discontinued.

Service 112 (1971 – 1985)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Upp Serangoon Rd 10.5 km Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
UBC		6 December	Operations transferred to UBC.
	1972	18 June	Amended to ply Bendemeer Rd towards Commonwealth Ave Ter with the conversion of Serangoon Rd to one-way traffic.
	1973	11 March	Amended to ply Zion Rd and Hoot Kiam Rd towards Commonwealth Ave Ter with the partial conversion of Kim Seng Rd and Irwell Bank Rd to one-way traffic.
	1974	1 October	Serves merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
	1975	2 February	Amended to ply Tiong Bahru Rd and the extended Zion Rd towards Commonwealth Ave Ter with the partial conversion of Kim Seng Rd and Outram Rd to one-way traffic.
		2 November	Amended to temporary bus terminal along Holland Dr with the partial closure of Commonwealth Ave Ter to facilitate the extension of Commonwealth Ave.
	1977	29 August	Amended back to Commonwealth Ave Ter via Nth Buona Vista Rd.
	1979	11 February	Amended to ply the extended Shenton Way towards Commonwealth Ave Ter, skipping Parsi Rd and Anson Rd.
	1980	20 January	Amended to ply Spottiswoode Pk Rd with the partial conversion of Cantonment Rd to one-way traffic.
	1981	11 January	Shortened to loop at Finlayson Green from Commonwealth Ave Ter and amended to ply Cecil St and Shenton Way.
		21 September	Extended to loop at Empress Pl.
	1982	27 May	Amended to Buona Vista Ter.
	1984	10 June	Converted to peak hour service on weekdays and Saturdays.
	1985	24 November	Discontinued.

Service 116 (Apr – Aug 2006)

Operator	Year	Date	Service changes
	2006	3 April	Introduced between Hougang Ctrl Int and Buangkok View (Buangkok Green Med Pk) (Loop) for a trial period of 3 months, operating between 0630 hrs and 1730 hrs daily.
		10 July	Revised to operate on weekdays only.
		15 August	Discontinued.

Service 118 (1988 – 1990)

Operator	Year	Date	Service changes
	1988	24 January	Introduced between Hougang Int and Tomlinson Rd (Loop).
	1990	16 December	Integrated with Service 111 and discontinued.

Service 120 (Apr – May 1971)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Jln Aman Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		9 May	Integrated with Service 120A, amended to ply Stamford Rd, Waterloo St and Bras Basah Rd and re-numbered Service 120/120A.

Service 120A (Apr – May 1971)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Jln Aman Ter and Stamford Rd (Loop).
		9 May	Integrated with Service 120 and discontinued.

Service 120/120A (1971 – 1974)

Operator	Year	Date	Service changes
STC	1971	9 May	Re-numbered from Service 120 between Jln Aman Ter and Prince Edward Ter.
ABS		6 December	Operations transferred to ABS.
	1974	3 February	Amended to skip Stamford Rd, Waterloo St and Bras Basah Rd and re-numbered Service 120 under 1974 Bus Rationalisation.

Service 120 (1974 – 1989)

Operator	Year	Date	Service changes
	1974	3 February	Re-numbered from Service 120/120A as a service between Jln Aman Ter and Prince Edward Ter under 1974 Bus Rationalisation.
		8 December	Amended to ply Cecil St, skipping Robinson Rd.
	1976	14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
	1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
	1981	23 August	Shortened to loop at Beach Rd from Jln Aman Ter.
	1983	2 January	Amended to Whampoa Rd Ter and amended to ply Whampoa Rd, Whampoa Dr, Jln Bahagia and Kim Keat Rd when exiting St. Michael’s Est.
			Amended to ply Whampoa Dr when entering St. Michael’s Est, skipping Moulmein Green and Jln Kebun Limau.
	1989	TBC	Discontinued.

Service 121 (1971 – 1974)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Jln Aman Ter and Prince Edward Ter under 1971 Bus Reorganisation.
ABC		6 December	Operations transferred to ABC.
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 122 (1971 – 1993)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Jln Aman Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
	1977	17 May	Amended to ply Commonwealth Ave Extension and Nth Buona Vista Rd towards Commonwealth Ave Ter.
		29 August	Amended to ply Holland Ave, Holland Dr and Nth Buona Vista Rd towards Commonwealth Ave Ter.
	1982	27 May	Amended to Buona Vista Ter.
	1983	2 January	Amended to Whampoa Rd Ter and amended to ply Whampoa Rd, Whampoa Dr, Jln Bahagia and Kim Keat Rd when exiting St. Michael’s Est.
			Amended to ply Whampoa Dr when entering St. Michael’s Est, skipping Moulmein Green and Jln Kebun Limau.
	1985	6 January	Extended to Bt Batok Ter.
	1987	19 April	Serves new staggered bus stop under the PIE Flyover along Jln Anak Bt, skipping the bus stop opposite Bt Timah Plaza.
			Amended to use new access road from Upp Bt Timah Rd to Jln Anak Bt, skipping BKE.
		14 June	Amended to ply Victoria St, Kallang Rd and Lavender St, skipping Arab St, Rochor Canal Rd, Kitchener Rd and Tyrwhitt Rd.
		27 September	Amended to Bt Batok Int.
			Amended to ply Sth Bridge Rd and Eu Tong Sen St, skipping Upp Circular Rd.
		13 December	Serves new staggered bus stop opposite Peninsula Plaza along Nth Bridge Rd, skipping the bus stop outside St Andrew’s Cath.
	1990	10 June	Amended to ply Nth Boat Quay, skipping Sth Bridge Rd, Nth Canal Rd and Eu Tong Sen St.
	1991	28 April	Shortened to Buona Vista Ter under TransitLink Network Integration Exercise Phase 4.
	1993	4 April	Discontinued under TransitLink Network Integration Exercise Phase 12.

Service 126 (1971 – 1990)

Operator	Year	Date	Service changes
UBC	1971	25 October	Introduced between Jln Aman Ter and New Bridge Rd (Loop).
	1974	1 October	Serves merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
	1983	2 January	Amended to Whampoa Rd Ter and amended to ply Whampoa Rd, Whampoa Dr, Jln Bahagia and Kim Keat Rd when exiting St. Michael’s Est.
			Amended to ply Whampoa Dr when entering St. Michael’s Est, skipping Moulmein Green and Jln Kebun Limau.
	1987	27 April	Converted to peak hour service on weekdays and Saturdays only.
		27 September	Amended to ply the extended Eu Tong Sen St towards St. Michael’s Ter to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St towards St. Michael’s Ter to facilitate the second stage of road expansion along New Bridge Rd.
	1989	29 January	Serves relocated bus stop opposite Sri Mariamman Tp along Sth Bridge Rd, skipping a removed bus stop opposite Jamae Mque.
	1990	16 April	Discontinued.

Service 128 (2008 – 2020)

Refer to this article.

Service 131M (2014 – 2022)

Refer to this article.

Service 132A (1984 – 1986)

Operator	Year	Date	Service changes
	1984	30 January	Introduced between Ang Mo Kio Int and Tomlinson Rd (Loop) as a peak hour service on weekdays & Saturdays.
	1986	14 April	Discontinued.

Service 133A (1988 – 1989)

Operator	Year	Date	Service changes
	1988	10 July	Introduced between Ang Mo Kio Int and Marina Ctr Ter as an alternate route of Service 133 via Boundary Rd and Serangoon Ave 2.
	1989	5 November	Integrated with Service 133 and discontinued.

Service 133M (2010 – 2012)

Refer to this article.

Service 134 (1980 – 1993)

Operator	Year	Date	Service changes
	1980	17 August	Introduced between Ang Mo Kio Ave 3 Ter and New Bridge Rd Ter.
	1981	5 July	Amended to Ang Mo Kio Ctrl 2 Ter.
	1983	10 April	Amended to Ang Mo Kio Int.
	1987	6 June	Amended to the relocated New Bridge Rd Ter.
		27 September	Amended to ply the extended Eu Tong Sen St towards Ang Mo Kio Int to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St towards Ang Mo Kio Int to facilitate the second stage of road expansion along New Bridge Rd.
	1988	20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
	1992	3 May	Shortened to Bishan Int under TransitLink Network Integration Exercise Phase 7.
	1993	11 April	Amended to ply Hill St and New Bridge Rd, skipping Nth Bridge Rd, Sth Bridge Rd and Upp Cross St.
		5 December	Integrated with Service 104 to form Service 54 and discontinued under TransitLink Network Integration Exercise Phase 14.

Service 136 (1974 – 1975)

Operator	Year	Date	Service changes
	1974	3 February	Re-numbered from Service 140A as a service between Toa Payoh Town Ctr Ter and Stamford Rd (Loop).
		TBC	Extended to Prince Edward Ter.
	1975	TBC	Discontinued.

Service 137 (1973 – 1992)

Operator	Year	Date	Service changes
UBC	1973	25 June	Introduced between Toa Payoh Town Ctr Ter and Mandai Lake Rd (Loop).
	1980	13 July	Amended to ply Toa Payoh East, Kim Keat Ave, Toa Payoh East, Lor 7 Toa Payoh, Lor 6 Toa Payoh, Toa Payoh East, Lor 5 Toa Payoh and Lor 4 Toa Payoh.
	1983	26 December	Amended to Toa Payoh Int.
	1990	21 February	Skips removed bus stop opposite Jasmine Rd along Upp Thomson Rd.
	1992	20 September	Discontinued under TransitLink Network Integration Exercise Phase 9.

Service 138 (1972 – 1974)

Operator	Year	Date	Service changes
UBC	1972	26 June	Introduced between Toa Payoh Town Ctr Ter and Jln Aman (Loop).
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 138 (1978 – 1988)

Operator	Year	Date	Service changes
	1978	27 July	Introduced between Ang Mo Kio Ave 6 Ter and Robinson Rd (Loop), replacing Blue Arrow Service 308.
		3 December	Amended to ply Mayne Rd and Bt Timah Rd with the partial conversion of Mackenzie Rd to two-way traffic.
	1979	11 February	Amended to ply the extended Shenton Way, Keppel Rd and Anson Rd, skipping Parsi Rd.
		12 August	Amended to Ang Mo Kio Ave 3 Ter.
		15 October	Amended to ply Marymount Rd, converted to a semi-express service operating on weekdays and Saturdays only.
		28 October	Amended to ply Sungei Rd (towards Shenton Way) and Bt Timah Rd (towards Ang Mo Kio Ave 3 Ter) with the partial conversion of Bt Timah Rd to two-way traffic and Rochor Canal Rd to one-way traffic, skipping Mackenzie Rd and Mayne Rd.
	1981	5 July	Amended to Ang Mo Kio Ctrl 2 Ter.
		11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
		2 November	Converted to express service, calling at key bus stops along Ang Mo Kio Ave 3, Ang Mo Kio Ave 6, Anson Rd, Robinson Rd, Collyer Quay, Connaught Dr and Coleman St.
	1982	TBC	Last bus extended to 1930 hrs on weekdays & Saturdays.
	1983	10 April	Amended to Ang Mo Kio Int.
	1985	15 April	Serves all bus stops along Connaught Dr, Collyer Quay, Raffles Quay and Shenton Way and amended to ply Dhoby Ghaut, Selegie Rd, Bt Timah Rd and Kg Java Rd towards Ang Mo Kio Int.
	1986	7 January	Serves all bus stops along Marymount Rd.
	1988	24 January	Discontinued.

Service 139M (2014 – 2022)

Refer to this article.

Service 140 (1971 – 1988)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Lor 6 Toa Payoh Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1974	24 February	Amended to ply Grange Rd, Orchard Blvd and Paterson Rd towards Toa Payoh Town Ctr Ter with the conversion of Orchard Rd to one-way traffic.
		8 December	Amended to ply Cecil St, skipping Robinson Rd.
	1975	21 July	Amended to ply Stamford Rd, skipping Coleman St and Armenian St.
	1976	14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
	1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
	1983	26 December	Amended to Toa Payoh Int, shortened to loop at Orchard Rd and converted into a semi-express service.
	1987	13 December	Serves new staggered bus stop outside Orchard Stn along Orchard Blvd, skipping the bus stop opposite Orchard Stn.
			Serves new bus stop outside Newton Stn along Scotts Rd.
	1988	24 January	Discontinued.

Service 140A (1971 – 1974)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Stamford Rd (Loop) under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1974	3 February	Re-numbered Service 136 under 1974 Bus Rationalisation.

Service 141 (1971 – 1988)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Kim Keat Ave Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
UBC		6 December	Operations transferred to UBC.
	1974	8 December	Amended to ply Cecil St, skipping Robinson Rd.
	1975	21 July	Amended to ply St. Andrew’s Rd and Stamford Rd, skipping Coleman St and Hill St.
	1976	14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
	1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
	1983	2 January	Amended to serve Balestier Rd, Lavender St and Serangoon Rd/Jln Besar, skipping Rangoon Rd and Kitchener Rd.
		26 December	Amended to Toa Payoh Int, amended to loop at Robinson Rd and converted to a semi-express service on weekdays and Saturdays only.
	1985	15 April	Serves all bus stops along Connaught Dr, Collyer Quay, Raffles Quay and Shenton Way and amended to ply Cecil St, Dhoby Ghaut, Selegie Rd, Bt Timah Rd and Kg Java Rd towards Toa Payoh Int.
	1988	24 January	Discontinued.

Service 141A (1971 – 1974)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Lor 6 Toa Payoh Ter and Finlayson Green (Loop) under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
UBC		6 December	Operations transferred to UBC.
	1974	3 February	Integrated with Service 141 and discontinued under 1974 Bus Rationalisation.

Service 142 (1971 – 1976)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Sth Canal Ter under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
ABC		6 December	Operations transferred to ABC.
	1972	11 June	Amended to ply the extended Upp Cross St with the partial conversion of Havelock Rd to one-way traffic, skipping New Bridge Rd.
	1974	24 February	Amended to ply Grange Rd and Orchard Blvd with the conversion of Orchard Rd to one-way traffic, skipping Orchard Rd.
	1976	TBC	Discontinued.

Service 144 (1971 – 1982)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Kim Keat Ave Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1972	11 June	Amended to ply the extended Upp Cross St with the partial conversion of Havelock Rd to one-way traffic, skipping New Bridge Rd.
	1974	24 February	Amended to ply Grange Rd, Orchard Blvd and Paterson Rd towards Toa Payoh Town Ctr Ter with the conversion of Orchard Rd to one-way traffic.
	1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
	1977	17 May	Amended to ply Commonwealth Ave Extension and Nth Buona Vista Rd towards Commonwealth Ave Ter.
		29 August	Amended to ply Holland Ave, Holland Dr and Nth Buona Vista Rd towards Commonwealth Ave Ter.
	1981	5 July	Amended to ply Cantonment Rd towards Commonwealth Ave Ter, skipping a portion of Neil Rd and New Bridge Rd.
	1982	11 April	Discontinued.

Service 146 (1971 – 1989)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Keppel Harbour Ter under 1971 Bus Reorganisation.
		2 May	Extended to Pasir Panjang Rd Ter.
		2 August	Amended to Toa Payoh Town Ctr Ter.
UBC		6 December	Operations transferred to UBC.
	1972	18 June	Amended to ply Bendemeer Rd towards Pasir Panjang Rd Ter with the conversion of Serangoon Rd to one-way traffic.
	1974	1 October	Serves merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd.
		8 December	Amended to ply Cecil St, skipping Robinson Rd.
	1979	11 February	Amended to ply the extended Shenton Way towards Pasir Panjang Rd Ter, skipping Parsi Rd and Anson Rd.
	1981	5 July	Amended to Kent Ridge Ter.
	1983	26 December	Amended to Toa Payoh Int.
			Integrated with Service 176 and extended to Clementi Int.
	1985	15 December	Amended to ply Jln Toa Payoh and Lor 2 Toa Payoh towards Toa Payoh Int with the partial closure of Kim Keat Ave.
	1988	3 January	Serves new staggered bus stop opposite Treasury Bldg along Shenton Way, skipping the bus stop opposite Marina Hse.
		11 January	Serves merged bus stop along Ayer Rajah Rd.
		8 March	Amended to ply Clementi Ave 3 with the abolition of right turning from Clementi Ave 3 to Commonwealth Ave West.
	1989	27 August	Integrated with Service 166 and discontinued.

Service 148 (1971 – 1989)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Kim Keat Ave Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1972	18 June	Amended to ply Bendemeer Rd towards Commonwealth Ave Ter with the conversion of Serangoon Rd to one-way traffic.
	1975	6 July	Amended to ply Jln Kolam Ayer, Kallang Bahru, Boon Keng Rd, Lor 1 Geylang and Sims Ave/Geylang Rd, skipping Lavender St.
	1977	17 May	Amended to ply Commonwealth Ave Extension and Nth Buona Vista Rd towards Commonwealth Ave Ter.
		29 August	Amended to ply Holland Ave, Holland Dr and Nth Buona Vista Rd towards Commonwealth Ave Ter.
	1982	27 May	Amended to Buona Vista Ter.
		11 June	Amended to ply Bendemeer Rd and Geylang Bahru, skipping Jln Kolam Ayer.
	1983	1 January	Amended to ply Woodsville Flyover, skipping Bendemeer Rd, Whampoa Nth and Serangoon Rd.
		26 December	Amended to Toa Payoh Int.
	1985	15 December	Amended to ply Jln Toa Payoh and Lor 2 Toa Payoh towards Toa Payoh Int with the partial closure of Kim Keat Ave.
	1987	27 September	Amended to ply Sth Bridge Rd, Nth Canal Rd and Eu Tong Sen St, skipping Upp Circular Rd.
	1989	27 August	Integrated with Service 26 and discontinued.

Service 148 (Mar – Nov 1992)

Operator	Year	Date	Service changes
	1992	29 March	Introduced between Clementi Int and Lor 1 Geylang Ter under TransitLink Network Integration Exercise Phase 6.
		29 November	Discontinued under TransitLink Network Integration Exercise Phase 10.

Service 149 (1971 – 1980)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Kim Keat Ave Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1974	3 February	Integrated with Service 149A and amended to ply Lor 6 Toa Payoh, Lor 2 Toa Payoh, Lor 1A Toa Payoh, Lor 1 Toa Payoh, Lor 2 Toa Payoh, Lor 3 Toa Payoh, Lor 4 Toa Payoh, Lor 5 Toa Payoh, Lor 4 Toa Payoh and Lor 1 Toa Payoh under 1974 Bus Rationalisation.
		8 December	Amended to ply Cecil St, skipping Robinson Rd.
	1975	21 July	Amended to ply Stamford Rd, skipping Coleman St and Armenian St.
	1976	14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
	1978	5 March	Amended to ply Keng Lee Rd with the partial conversion of Kg Java Rd to one-way traffic.
		3 December	Amended to ply Mayne Rd and Bt Timah Rd with the partial conversion of Mackenzie Rd to two-way traffic.
	1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
		28 October	Amended to ply Sungei Rd (towards Prince Edward Ter) and Bt Timah Rd (towards Toa Payoh Town Ctr Ter) with the partial conversion of Bt Timah Rd to two-way traffic and Rochor Canal Rd to one-way traffic, skipping Mackenzie Rd and Mayne Rd.
	1980	3 February	Integrated with Service 150 and discontinued.

Service 149 (1983 – 1993)

Operator	Year	Date	Service changes
	1983	25 June	Introduced between Toa Payoh Town Ctr Ter and Changi Airport PTB (Loop) under Changi Airport Bus Plan 1983.
		26 December	Amended to Toa Payoh Int.
	1984	14 September	Amended to ply Siglap Rd and Siglap Lk towards Changi Airport with the opening of ECP.
	1985	15 December	Amended to ply Jln Toa Payoh and Lor 2 Toa Payoh towards Toa Payoh Int with the partial closure of Kim Keat Ave.
	1989	19 November	Serves new bus stop outside Kallang Stn along Sims Ave.
	1990	13 October	Amended to serve Changi Airport PTB 2.
	1991	7 July	Serves new bus stop outside PA Sea Sports Ctr along ECP.
	1993	5 December	Integrated with Services 16 and 31 and discontinued under TransitLink Network Integration Exercise Phase 14.

Service 149A (1971 – 1974)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Finlayson Green (Loop) under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1974	3 February	Integrated with Service 149 and discontinued under 1974 Bus Rationalisation.

Service 150 (1971 – 1990)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Crawford St Ter under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1978	5 March	Amended to ply Keng Lee Rd with the partial conversion of Kg Java Rd to one-way traffic.
		3 December	Amended to ply Mayne Rd and Bt Timah Rd with the partial conversion of Mackenzie Rd to two-way traffic.
	1979	28 October	Amended to ply Sungei Rd (towards Crawford St Ter) and Weld Rd, Jln Besar and Bt Timah Rd (towards Toa Payoh Town Ctr Ter) with the partial conversion of Bt Timah Rd to two-way traffic and Rochor Canal Rd to one-way traffic, skipping Mackenzie Rd and Mayne Rd.
	1980	3 February	Integrated with Service 149 and amended to ply Jln Sultan, Beach Rd, Middle Rd and Selegie Rd towards Toa Payoh Town Ctr Ter, skipping Arab St, Rochor Canal Rd, Weld Rd, Jln Besar and Rochor Canal Rd.
	1983	26 December	Amended to Toa Payoh Int.
	1990	2 September	Integrated with Service 56 and discontinued.

Service 151 (1971 – 1989)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Kim Keat Ave Ter and Sth Canal Ter under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1972	11 June	Amended to ply Upp Cross St with the partial conversion of Havelock Rd to one-way traffic, skipping Upp Hokien St.
	1974	3 February	Integrated with Service 159 and extended to Outram Pk Ter under 1974 Bus Rationalisation.
	1975	2 February	Amended to ply Tiong Bahru Rd and the extended Zion Rd towards Toa Payoh Town Ctr Ter with the partial conversion of Kim Seng Rd and Outram Rd to one-way traffic.
	1976	1 January	Extended to loop at New Bridge Rd from Toa Payoh Town Ctr Ter.
	1983	26 December	Amended to Toa Payoh Int and converted to day service on weekdays & Saturdays.
	1986	16 November	Serves new staggered bus stop outside Thong Teck Bldg along Scotts Rd, skipping the bus stop outside Metro Orchard.
	1987	6 April	Skips removed bus stop before College Rd along Outram Rd.
		1 November	Amended to ply Eu Tong Sen St towards Toa Payoh Int to facilitate the second stage of road expansion along New Bridge Rd.
	1989	28 May	Discontinued.

Service 152 (1971 – 2000)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Telok Kurau Rd Ter under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1973	1 July	Extended to Chai Chee Ter.
	1976	30 December	Amended to ply Sims Ave/Geylang Rd and the extended Tg Katong Rd, skipping Guillemard Rd.
	1977	15 August	Extended to Bedok Sth Rd Ter and amended to ply Sims Ave/Geylang Rd and Changi Rd, skipping Tg Katong Rd, Mountbatten Rd, East Coast Rd and Telok Kurau Rd.
	1979	8 April	Amended to Bedok Int.
		14 October	Amended to ply Sims Ave East towards Bedok Int with the conversion of Changi Rd to one-way traffic.
	1983	26 December	Amended to Toa Payoh Int.
	1998	31 May	Amended to Toa Payoh Temp Int.
			Serves new pair of bus stops outside and opposite Toa Payoh Swim Cplx along Lor 6 Toa Payoh.
	2000	29 October	Integrated with Service 28 and discontinued.

Service 153A (1971 – 1974)

Operator	Year	Date	Service changes
UBC	1971	19 July	Introduced between Lor 1 Toa Payoh Ter and Jln Bt Merah Ter.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1974	3 February	Integrated with Service 95 and discontinued under 1974 Bus Rationalisation.

Service 154A (1971 – 1974)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between New Bridge Rd Ter and Jln Besi Ter under 1971 Bus Reorganisation.
		1 September	Extended to Crawford St Ter.
		TBC	Extended to Benoi Rd Ter.
	1974	3 February	Re-numbered Service 209 under 1974 Bus Rationalisation.

Service 155A (1971 – 1974)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between New Bridge Rd Ter and Jln Besi Ter under 1971 Bus Reorganisation.
		1 September	Extended to Crawford St Ter.
		TBC	Extended to Benoi Rd Ter.
	1974	3 February	Re-numbered Service 209 under 1974 Bus Rationalisation.

Service 156 (1971 – 1983)

Operator	Year	Date	Service changes
ABS	1971	11 April	Introduced between Lor 1 Toa Payoh Ter and Upp Serangoon Ter under 1971 Bus Reorganisation.
		2 August	Amended to Toa Payoh Town Ctr Ter.
	1983	6 February	Amended to ply CTE towards Upp Serangoon Ter with the closure of temporary slip road between Braddell Rd and Lor Chuan.
		20 June	Amended back to ply Lor Chuan towards Upp Serangoon Ter with the opening of new link road between Braddell Rd and Lor Chuan under Braddell Flyover.
		26 December	Integrated with Service 153 and discontinued.

Service 159 (1971 – 1974)

Operator	Year	Date	Service changes
UBC	1971	11 August	Introduced between Toa Payoh Town Ctr Ter and Outram Pk Ter.
	1973	11 March	Amended to ply Zion Rd and Hoot Kiam Rd towards Toa Payoh Town Ctr Ter with the partial conversion of Kim Seng Rd and Irwell Bank Rd to one-way traffic.
	1974	3 February	Integrated with Service 151 and discontinued under 1974 Bus Rationalisation.

Service 160 (1971 – 1998)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Crawford St Ter and Rotherham Gate Ter under 1971 Bus Reorganisation.
		6 November	Amended to ply Canberra Rd, skipping Admiralty Rd East.
	1974	3 February	Amended to ply Old Upp Thomson Rd under 1974 Bus Rationalisation.
	1976	23 August	Amended to Admiralty Rd West Ter.
	1978	5 March	Amended to ply Keng Lee Rd with the partial conversion of Kg Java Rd to one-way traffic.
		3 December	Amended to ply Mayne Rd and Bt Timah Rd with the partial conversion of Mackenzie Rd to two-way traffic.
	1979	28 October	Amended to ply Sungei Rd (towards Crawford St Ter) and Weld Rd, Jln Besar and Bt Timah Rd (towards Admiralty Rd West Ter) with the partial conversion of Bt Timah Rd to two-way traffic and Rochor Canal Rd to one-way traffic, skipping Mackenzie Rd and Mayne Rd.
		25 November	Amended to ply Upp Thomson Rd, skipping Old Upp Thomson Rd.
	1983	3 April	Operations transferred to TIBS.
	1990	21 February	Skips removed bus stop opposite Jasmine Rd along Upp Thomson Rd.
	1996	10 February	Amended to ply Middle Rd towards Crawford St Ter and Jln Sultan, Beach Rd, Middle Rd, Victoria St, Rochor Rd and Rochor Canal Rd towards Admiralty Rd West Ter.
	1997	TBC	First bus from Admiralty Rd West Ter brought forward to 0600 hrs on Sundays and Public Holidays.
		TBC	Last bus from Crawford St Ter extended to 2330 hrs on weekdays.
	1998	27 December	Extended to Lor 1 Geylang Ter and re-numbered Service 980.

Service 160A (1971 – 1974)

Operator	Year	Date	Service changes
UBC	1971	3 May	Introduced between Rotherham Gate Ter and New Bridge Rd Ter.
		10 August	Amended to ply Dunearn Rd, Bt Timah Rd, Newton Circus and Balmoral Rd.
	1974	3 February	Re-numbered Service 167 under 1974 Bus Rationalisation.

Service 160M (2020 – 2023)

Refer to this article.

Service 161 (1971 – 1992)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Sembawang Rd End Ter and Prince Edward Ter under 1971 Bus Reorganisation.
	1974	8 December	Amended to ply Cecil St, skipping Robinson Rd.
	1976	14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
	1978	5 March	Amended to ply Keng Lee Rd with the partial conversion of Kg Java Rd to one-way traffic.
		3 December	Amended to ply Mayne Rd and Bt Timah Rd with the partial conversion of Mackenzie Rd to two-way traffic.
	1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
		28 October	Amended to ply Sungei Rd (towards Prince Edward Ter) and Bt Timah Rd (towards Sembawang Rd End Ter) with the partial conversion of Bt Timah Rd to two-way traffic and Rochor Canal Rd to one-way traffic, skipping Mackenzie Rd and Mayne Rd.
	1983	8 May	Operations transferred to TIBS.
	1987	28 June	Amended to Shenton Way Ter.
	1990	21 February	Skips removed bus stop opposite Jasmine Rd along Upp Thomson Rd.
	1992	20 September	Integrated with Service 167 and discontinued under TransitLink Network Integration Exercise Phase 9.

Service 162 (1971 – 1974)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Crawford St Ter and Nee Soon Transit Camp (Loop) under 1971 Bus Reorganisation.
		5 July	Amended to ply Old Upp Thomson Rd.
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 162 (1977 – 1991)

Operator	Year	Date	Service changes
	1977	21 November	Introduced between Ang Mo Kio Ave 6 Ter and Sims Ave (Loop).
	1978	29 December	Coverted to a semi-express service and amended to ply Lor Chuan and Upp Serangoon Rd.
	1979	10 September	Serves all bus stops along Lor Chuan and Upp Serangoon Rd.
	1980	6 January	Amended to Ang Mo Kio Ave 3 Ter.
	1981	10 May	Skips bus stop before Braddell Flyover along Braddell Rd.
		5 July	Amended to Ang Mo Kio Ctrl 2 Ter.
	1982	11 June	Amended to ply Bendemeer Rd and Geylang Bahru, skipping Jln Kolam Ayer.
	1983	6 February	Amended to ply CTE towards Ang Mo Kio Ctrl 2 Ter with the closure of temporary slip road between Braddell Rd and Lor Chuan.
		10 April	Amended to Ang Mo Kio Int.
		20 June	Amended to ply CTE towards Sims Ave.
	1986	16 March	Integrated with Service 77 and amended to ply Boundary Rd, Serangoon Ave 2 and Upp Serangoon Rd, skipping CTE and Braddell Rd.
	1991	6 January	Discontinued under TransitLink Network Integration Exercise Phase 1.

Service 162X/162M (2001 – 2023)

Refer to this article.

Service 163A (1971 – 1974)

Operator	Year	Date	Service changes
UBC	1971	6 July	Introduced between Sembawang Hills Dr and Prince Edward Ter.
		4 October	Extended to loop at Tg Pagar Rd.
	1974	3 February	Re-numbered Service 168 under 1974 Bus Rationalization.

Service 163M (2008 – 2019)

Refer to this article.

Service 164 (1971 – 1989)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Sembawang Rd End Ter and New Bridge Rd Ter under 1971 Bus Reorganisation.
	1972	11 June	Amended to ply the extended Upp Cross St with the partial conversion of Havelock Rd to one-way traffic, skipping New Bridge Rd.
	1973	1 November	Operations transferred to SBS.
	1983	8 May	Operations transferred to TIBS.
	1987	6 June	Amended to the relocated New Bridge Rd Ter.
		1 November	Amended to ply Eu Tong Sen St towards Sembawang Rd End Ter to facilitate the second stage of road expansion along New Bridge Rd.
	1988	20 March	Amended to ply New Bridge Rd, skipping Upp Pickering St, Sth Bridge Rd and Neil Rd.
	1989	29 January	Serves relocated bus stop opposite Sri Mariamman Tp along Sth Bridge Rd, skipping a removed bus stop opposite Jamae Mque.
		1 October	Discontinued.

Service 166 (1971 – 1974)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Sembawang Rd End Ter and Nee Soon Rd (loop) under 1971 Bus Reorganisation.
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 168 (1974 – 1989)

Operator	Year	Date	Service changes
	1974	3 February	Re-numbered from Service 163A as a service between Sembawang Hills Dr and Tg Pagar Rd Ter under 1974 Bus Rationalisation.
		24 February	Amended to ply Grange Rd, Orchard Blvd and Paterson Rd towards Sembawang Hills Dr with the conversion of Orchard Rd to one-way traffic.
	1976	15 February	Extended to Ang Mo Kio Ave 6 Ter and amended to Sth Canal Ter.
	1978	29 December	Shortened to loop at Orchard Rd from Ang Mo Kio Ave 6 Ter and converted to semi-express service.
	1979	12 August	Amended to Ang Mo Kio Ave 3 Ter.
		15 October	Amended to ply Marymount Rd.
	1981	5 July	Amended to Ang Mo Kio Ctrl 2 Ter.
	1983	10 April	Amended to Ang Mo Kio Int.
	1987	13 December	Serves new staggered bus stop outside Orchard Stn along Orchard Blvd, skipping the bus stop opposite Orchard Stn.
			Serves new bus stop outside Newton Stn along Scotts Rd.
	1989	11 June	Discontinued.

Service 175 (1971 – 1991)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Upp Jurong Rd Ter and Prince Edward Ter under 1971 Bus Reorganisation.
	1974	8 December	Amended to ply Cecil St, skipping Robinson Rd.
	1975	9 November	Amended to realigned Jurong Rd, skipping Old Jurong Rd.
	1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
		28 October	Amended to ply Sungei Rd towards Prince Edward Ter with the conversion of Rochor Canal Rd to one-way traffic.
		30 December	Amended to ply Jln Anak Bt towards Prince Edward Ter with the partial conversion of Upp Bt Timah Rd to one-way traffic.
	1980	2 January	Amended to the relocated Upp Jurong Rd Ter along Jln Ahmad Ibrahim.
		TBC	Amended to ply Bt Timah Rd towards Upp Jurong Rd Ter, skipping Mackenzie Rd.
	1983	30 October	Amended to Pioneer Rd Ter.
	1984	20 October	Amended to ply Bt Batok East Ave 3, Bt Batok St 24, Bt Batok St 23 and interim road with the partial closure of Jurong Rd (between Bt Batok East Ave 3 and Bt Batok St 23).
	1985	17 March	Amended to ply Bt Batok Rd, Bt Batok West Ave 3, Bt Batok Ctrl and Bt Batok East Ave 3 with the partial closure of Jurong Rd.
		30 November	Amended to ply along the new carriageway of Upp Jurong Rd (between Jln Boon Lay and Benoi Rd).
	1986	4 May	Amended to skip Jurong Cres.
	1987	28 June	Amended to Shenton Way Ter.
	1989	23 July	Serves new pair of bus stops near Pioneer Rd along Tuas Rd.
		6 November	Shortened to start from Bt Batok Int and loop at Tuas Rd.
	1990	7 July	Shortened to loop at Jurong West St 91, skipping Tuas Rd.
	1991	20 January	Discontinued under TransitLink Network Integration Exercise Phase 2.

Service 175 (1993 – 2005)

Operator	Year	Date	Service changes
	1993	18 July	Introduced between Lim Chu Kang Ter and Upp Bt Timah Rd (Loop).
	1994	TBC	Amended to ply Sg Tengah Rd with the partial closure of Choa Chu Kang Rd.
	1997	TBC	Serves new bus stop outside Lot 1 Shoppers’ Mall along Choa Chu Kang Ave 4.
	1998	TBC	Serves new pair of bus stops outside and opposite Blk 464 along Choa Chu Kang Ave 3.
	1999	26 December	Operations transferred to TIBS.
	2001	TBC	Serves new bus stop outside Sunshine Pl along Choa Chu Kang Ave 3.
	2005	27 February	Amended to start from Bt Panjang Int, loop at Lim Chu Kang Rd and re-numbered Service 975, skipping Choa Chu Kang Int and Upp Bt Timah Rd.

Service 175A (1980 – 1983)

Operator	Year	Date	Service changes
	1980	2 January	Introduced between Upp Jurong Rd Ter and Tuas Village (Loop).
	1983	30 October	Discontinued.

Service 176 (1971 – 1983)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Corporation Dr Ter and Prince Edward Ter under 1971 Bus Reorganisation.
	1974	3 February	Extended to Crawford St Ter under 1974 Bus Rationalisation.
		8 December	Amended to ply the extended Robinson Rd, skipping Market St.
	1976	15 February	Serves new staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd.
		14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
	1977	28 March	Extended to Boon Lay Gdns Ter.
	1978	15 January	Amended to ply Jln Sultan and Beach Rd.
		1 June	Shortened to Clementi Ter with the opening of Jurong Int.
	1979	11 February	Amended to ply the extended Shenton Way towards Clementi Ter, skipping Parsi Rd and Anson Rd.
		25 November	Shortened to loop at Empress Pl from Clementi Ter.
	1980	16 November	Amended to Clementi Int.
	1981	21 June	Amended to skip Nepal Circus towards Empress Pl.
		11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
	1983	26 December	Integrated with Service 146 and discontinued.

Service 177 (1978 – 1988)

Operator	Year	Date	Service changes
	1978	27 November	Introduced between Bt Timah Ter and Choa Chu Kang Rd End (Loop).
	1979	30 December	Amended to ply Jln Anak Bt towards Bt Timah Ter with the partial conversion of Upp Bt Timah Rd to one-way traffic.
	1987	19 April	Serves new staggered bus stop under the PIE Flyover along Jln Anak Bt, skipping the bus stop opposite Bt Timah Plaza.
	1988	31 July	Discontinued.

Service 179 (1974 – 1983)

Operator	Year	Date	Service changes
	1974	3 February	Introduced between Lim Chu Kang Ter and Bt Timah Ter under 1974 Bus Rationalisation.
	1978	27 November	Amended to skip Choa Chu Kang Rd End with the introduction of Service 177.
	1979	30 December	Amended to ply Jln Anak Bt towards Bt Timah Ter with the partial conversion of Upp Bt Timah Rd to one-way traffic.
	1983	27 November	Discontinued.

Service 179 (1985 – 1990)

Operator	Year	Date	Service changes
	1985	18 August	Introduced between Bt Batok Ter and New Bridge Rd Ter.
	1987	6 June	Amended to the relocated New Bridge Rd Ter.
		27 September	Amended to Bt Batok Int.
			Amended to ply the extended Eu Tong Sen St towards Bt Batok Int to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St towards Bt Batok Int to facilitate the second stage of road expansion along New Bridge Rd.
	1988	20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
		18 December	Extended to Choa Chu Kang Ter and amended to ply Scotts Rd and Orchard Rd.
	1990	7 January	Serves new pair of bus stops outside and opposite Bt Batok Driving Ctr along Bt Batok West Ave 5.
		10 March	Extended to interim terminal along Choa Chu Kang Ave 4.
		8 April	Amended to Choa Chu Kang Int.
		16 December	Integrated with Service 190 and discontinued.

Service 179 (1993 – 1999)

Operator	Year	Date	Service changes
	1993	3 January	Introduced between Choa Chu Kang Int and Fajar Rd (Loop) under TransitLink Network Integration Exercise Phase 11.
	1995	2 July	Operations transferred to TIBS.
	1999	26 December	Discontinued under Bukit Panjang LRT Rationalisation.

Service 180 (Apr – May 1971)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Bt Timah Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		9 May	Integrated with Service 180A, amended to ply Stamford Rd, Waterloo St and Bras Basah Rd and re-numbered Service 180/180A.

Service 180A (Apr – May 1971)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Bt Timah Ter and Stamford Rd (Loop) under 1971 Bus Reorganisation.
		9 May	Integrated with Service 180 and discontinued.

Service 180/180A (1971 – 1974)

Operator	Year	Date	Service changes
UBC	1971	9 May	Re-numbered from Service 180 between Bt Timah Ter and Prince Edward Ter.
	1974	3 February	Extended to Upp Bt Timah Rd Ter, extended to Tg Pagar Ter, amended to skip Stamford Rd, Waterloo St and Bras Basah Rd and re-numbered Service 180 under 1974 Bus Rationalisation.

Service 180 (1974 – 1991)

Operator	Year	Date	Service changes
	1974	3 February	Re-numbered from Service 180/180A as a service between Upp Bt Timah Rd Ter and Tg Pagar Ter under 1974 Bus Rationalisation.
		8 December	Amended to ply Cecil St, skipping Robinson Rd.
	1975	19 July	Amended to ply Coleman St and Hill St, skipping Stamford Rd.
	1976	11 January	Extended to Admiralty Rd Ter.
	1979	11 February	Amended to ply the extended Shenton Way, Rambau St and Trafalgar St towards Tg Pagar Ter, skipping Parsi Rd.
		1 August	Amended to Anson Rd Ter.
		25 November	Amended to ply Pickering St and Church St, skipping Nth Canal Rd and Market St.
		30 December	Amended to ply Jln Anak Bt towards Anson Rd Ter with the partial conversion of Upp Bt Timah Rd to one-way traffic.
	1983	7 August	Operations transferred to TIBS.
	1985	13 January	Extended to World Trade Ctr Ter.
	1990	19 August	Amended to ply Bt Timah Rd, Sungei Rd, Bencoolen St, Orchard Rd, Penang Rd and Clemenceau Ave (towards World Trade Ctr Ter) / Orchard Rd, Dhoby Ghaut, Selegie Rd and Bt Timah Rd due to the partial closure of Clemenceau Ave to facilitate Phase 2 of the construction of CTE.
	1991	6 January	Discontinued under TransitLink Network Integration Exercise Phase 1.

Service 181 (1971 – 1998)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Bt Timah Ter and Commonwealth Ave Ter under 1971 Bus Reorganisation.
		28 September	Amended to ply the extended Ganges Ave towards Bt Timah Ter.
		8 November	Extended to Upp Bt Timah Rd Ter.
	1972	11 June	Amended to ply Upp Cross St with the partial conversion of Havelock Rd to one-way traffic, skipping Upp Hokien St.
	1974	3 February	Extended to Crawford St Ter under 1974 Bus Rationalisation.
	1979	30 December	Amended to ply Jln Anak Bt towards Crawford St Ter with the partial conversion of Upp Bt Timah Rd to one-way traffic.
	1980	14 December	Extended to Woodlands Town Ter.
	1981	29 November	Amended to Woodlands Int.
	1983	4 September	Operations transferred to TIBS.
	1987	27 September	Amended to ply the extended Eu Tong Sen St towards Crawford St Ter to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St towards Crawford St Ter to facilitate the second stage of road expansion along New Bridge Rd.
		13 December	Serves new staggered bus stop opposite Peninsula Plaza along Nth Bridge Rd, skipping the bus stop outside St Andrew’s Cath.
	1988	28 February	Revised to operate on weekdays and Saturdays only with the introduction of Service 181#.
		20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
	1990	22 July	Serves additional bus stop outside Ellenborough Mkt along Eu Tong Sen St.
	1996	4 February	Amended to Woodlands Reg Int.
	1997	TBC	First bus from Woodlands Reg Int brought forward to 0530 hrs.
		TBC	Serves additional bus stop after Jln Bt Merah along Kg Bahru Rd.
		7 December	Amended to ply Sth Bridge Rd, Neil Rd and Cantonment Rd with the partial closure of New Bridge Rd to facilitate the construction of Chinatown MRT station on the North East MRT Line.
	1998	27 December	Extended to Lor 1 Geylang Ter and re-numbered Service 961.

Service 181# (1988 – 1998)

Operator	Year	Date	Service changes
	1988	28 February	Introduced between Woodlands Int and Crawford St Ter as an alternate route of Service 181 via Marina Centre, operating on Sundays and Public Holidays.
		20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
	1990	22 July	Serves additional bus stop outside Ellenborough Mkt along Eu Tong Sen St.
	1996	4 February	Amended to Woodlands Reg Int.
	1997	TBC	Serves additional bus stop after Jln Bt Merah along Kg Bahru Rd.
		7 December	Amended to ply Sth Bridge Rd, Neil Rd and Cantonment Rd with the partial closure of New Bridge Rd to facilitate the construction of Chinatown MRT station on the North East MRT Line.
	1998	27 December	Extended to Lor 1 Geylang Ter and re-numbered Service 961#.

Service 182 (1971 – 1996)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Bt Timah Ter and Jln Besi Ter under 1971 Bus Reorganisation.
		TBC	Extended to Benoi Rd Ter.
	1972	11 June	Amended to ply the extended Upp Cross St with the partial conversion of Havelock Rd to one-way traffic, skipping New Bridge Rd.
	1974	3 February	Amended to loop at Shenton Way from Bt Timah Ter under 1974 Bus Rationalisation.
		24 February	Amended to ply Grange Rd, Orchard Blvd and Paterson Rd towards Bt Timah Ter with the conversion of Orchard Rd to one-way traffic.
		8 December	Amended to ply Cecil St, skipping Robinson Rd.
	1976	6 June	Extended to Admiralty Rd Ter and amended to New Bridge Rd Ter.
	1979	30 December	Amended to ply Jln Anak Bt towards New Bridge Rd Ter with the partial conversion of Upp Bt Timah Rd to one-way traffic.
	1983	7 August	Operations transferred to TIBS.
	1987	6 June	Amended to the relocated New Bridge Rd Ter.
		27 September	Amended to ply the extended Eu Tong Sen St towards Marsiling Ter to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St towards Marsiling Ter to facilitate the second stage of road expansion along New Bridge Rd.
		13 December	Serves new staggered bus stop outside Orchard Stn along Orchard Blvd, skipping the bus stop opposite Orchard Stn.
			Serves new bus stop outside Newton Stn along Scotts Rd.
	1988	20 March	Amended to ply Upp Cross St and New Bridge Rd, skipping Neil Rd.
	1992	19 July	Amended to ply Orchard Lk due to the closure of Grange Rd to facilitate road expansion works.
	1993	3 January	Amended to Shenton Way Ter under TransitLink Network Integration Exercise Phase 7.
	1995	7 May	Amended to ply Orchard Turn.
	1996	4 February	Amended to Woodlands Reg Int.
		10 March	Discontinued under Woodlands MRT Rationalisation.

Service 183 (1974 – 1988)

Operator	Year	Date	Service changes
	1974	3 February	Introduced between Benoi Rd Ter and Sth Canal Ter under 1974 Bus Rationalisation.
	1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
	1978	1 June	Amended to Jurong Int and amended to New Bridge Rd Ter.
	1987	6 April	Skips removed bus stop before College Rd along Outram Rd.
		6 June	Amended to the relocated New Bridge Rd Ter.
		1 November	Amended to ply Eu Tong Sen St towards Jurong Int to facilitate the second stage of road expansion along New Bridge Rd.
	1988	11 January	Serves merged bus stop along Ayer Rajah Rd.
		18 December	Discontinued.

Service 183 (1998 – 2002)

Operator	Year	Date	Service changes
	1998	19 July	Introduced between Tuas Ter and Tuas Sth Ave 6 (Loop).
	2001	11 February	Extended to loop at Tuas Sth Ave 9, skipping Tuas Sth Ave 6.
	2002	26 May	Integrated with Service 182/182X and discontinued.

Service 184 (1977 – 1990)

Operator	Year	Date	Service changes
	1977	25 November	Introduced between Telok Blangah Way Ter and Boon Lay Gdns Ter.
	1978	1 June	Amended to Jurong Int.
	1980	28 September	Amended to Bt Merah Int.
	1981	15 February	Amended to skip Telok Blangah Way and Telok Blangah Cres in both directions.
	1987	2 August	Amended to ply West Coast Highway, skipping Upp Ayer Rajah Rd and Clementi Rd.
	1990	1 July	Integrated with Service 176 and discontinued with the opening of Boon Lay Int.

Service 185 (1979 – 1985)

Operator	Year	Date	Service changes
	1979	16 July	Introduced between Clementi Ter and Nth Buona Vista Rd (Loop).
		25 November	Extended to loop at Bt Merah Ctrl.
	1980	28 September	Extended to loop at Bt Merah Int.
		16 November	Amended to Clementi Int.
	1981	21 June	Amended to skip Nepal Circus towards Bt Merah Int.
	1985	28 April	Integrated with Service 92 and discontinued.

Service 185 (1988 – 2003)

Operator	Year	Date	Service changes
	1988	31 July	Introduced between Choa Chu Kang Ter and Shenton Way Ter.
		25 August	Amended to ply Choa Chu Kang Ave 1 with the completion of the road junction between Teck Whye Ave and Choa Chu Kang Ave 1.
	1989	28 May	Amended to ply Commonwealth Ave.
	1990	10 March	Extended to interim terminal along Choa Chu Kang Ave 4.
		8 April	Amended to Choa Chu Kang Int.
	1991	28 April	Amended to ply Bt Batok East Ave 2 under TransitLink Network Integration Exercise Phase 4, skipping Bt Batok East Ave 3.
	1993	3 January	Shortened to loop at Jln Anak Bt from Choa Chu Kang Int with the introduction of Service 186 under TransitLink Network Integration Exercise Phase 11.
	1997	TBC	Serves new bus stop outside Lot 1 Shoppers’ Mall along Choa Chu Kang Ave 4.
	1999	29 August	Operations transferred to TIBS.
			First bus brought forward to 0530 hrs on Sundays & Public Holidays.
	2003	TBC	Serves new bus stop outside Goh & Goh Bldg along Jln Jurong Kechil.
		27 July	Integrated with Service 989 to form Service 985 and discontinued.

Service 186 (1977 – 1989)

Operator	Year	Date	Service changes
	1977	7 November	Introduced between Clementi Ter and Tg Pagar Rd Ter.
	1978	5 June	Amended to relocated roadside terminus along Clementi Ave 3 via Commonwealth Ave West, skipping Clementi Ave 2.
	1979	1 August	Amended to Anson Rd Ter.
	1980	16 November	Amended to Clementi Int.
	1985	27 January	Amended to Prince Edward Ter with the closure of Anson Rd Ter.
	1987	28 June	Amended to Shenton Way Ter.
	1988	8 March	Amended to ply Clementi Ave 3 with the abolition of right turning from Clementi Ave 3 to Commonwealth Ave West.
	1989	27 August	Integrated with Service 145 and discontinued.

Service 187 (1981 – 1983)

Operator	Year	Date	Service changes
	1981	15 February	Introduced as a day service between Bt Merah Int and Empress Pl (Loop).
		19 May	Converted to peak hour service on weekdays and Saturdays.
	1983	14 November	Discontinued.

Service 188 (1977 – 1987)

Operator	Year	Date	Service changes
	1977	17 October	Introduced between Ulu Pandan Ter and Shenton Way (Loop), replacing the deleted sectors of Service 94.
	1979	11 February	Amended to ply the extended Shenton Way towards Ulu Pandan Ter, skipping Parsi Rd and Anson Rd.
	1980	20 January	Amended to ply Spottiswoode Pk Rd with the partial conversion of Cantonment Rd to one-way traffic.
	1981	11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
	1987	6 April	Skips removed bus stop before College Rd along Outram Rd.
		5 July	Discontinued.

Service 188 (1988 – 1991)

Operator	Year	Date	Service changes
	1988	10 July	Introduced between Jurong Int and Jurong West St 91 (Loop).
	1989	17 December	Amended to ply Jurong West St 72 and Jurong West Ave 5, skipping Pioneer Rd Nth.
	1990	1 July	Amended to start/terminate at Corporation Dr with the opening of Boon Lay Int.
	1991	20 January	Discontinued under TransitLink Network Integration Exercise Phase 2.

Service 189A (2001 – 2003)

Operator	Year	Date	Service changes
	2001	15 April	Introduced between Bt Batok Int and Harbour Dr (Loop), operating at selected timings only.
	2003	4 May	Discontinued.

Service 190 (Apr – May 1971)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Delta Circus Ter and Sth Canal Ter under 1971 Bus Reorganisation.
		25 April	Integrated with Service 193/193A and discontinued.

Service 190 (1974 – 1979)

Operator	Year	Date	Service changes
	1974	3 February	Re-numbered from Service 191A between Jln Bt Merah Ter and Prince Edward Ter under 1974 Bus Rationalisation.
		24 February	Amended to ply Grange Rd, Orchard Blvd and Paterson Rd towards Jln Bt Merah Ter with the conversion of Orchard Rd to one-way traffic.
		8 December	Amended to ply Cecil St, skipping Robinson Rd.
	1976	14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
	1977	19 June	Amended to ply Orchard Blvd and Grange Rd towards Jln Bt Merah Ter with the full conversion of Orchard Rd to one-way traffic.
	1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
		25 November	Integrated with Service 14 and discontinued.

Service 191 (1971 – 1983)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Ulu Pandan Ter and Prince Edward Ter under 1971 Bus Reorganisation.
ABS		6 December	Operations transferred to ABS.
	1974	24 February	Amended to ply Grange Rd, Orchard Blvd and Paterson Rd towards Ulu Pandan Ter with the conversion of Orchard Rd to one-way traffic.
		8 December	Amended to ply Cecil St, skipping Robinson Rd.
	1976	14 March	Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club.
	1977	19 June	Amended to ply Orchard Blvd and Grange Rd towards Ulu Pandan Ter with the full conversion of Orchard Rd to one-way traffic.
		1 August	Extended to Clementi Ter.
	1978	5 June	Amended to relocated terminus along Clementi Ave 3.
	1979	11 February	Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd.
	1980	16 November	Amended to Clementi Int.
	1981	15 June	Shortened to loop at Nth Bridge Rd from Clementi Int with the introduction of Service 75, skipping Shenton Way.
		20 September	Extended to loop at Nicoll Highway.
	1983	30 October	Integrated with Service 7 and discontinued.

Service 191A (1971 – 1974)

Operator	Year	Date	Service changes
STC	1971	11 April	Introduced between Commonwealth Ave Ter and Prince Edward Ter under 1971 Bus Reorganisation.
		2 May	Shortened to Jln Bt Merah Ter.
ABS		6 December	Operations transferred to ABS.
	1974	3 February	Re-numbered Service 190 under 1974 Bus Rationalisation.

Service 192 (1971 – 1974)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Commonwealth Ave Ter and Sth Canal Ter under 1971 Bus Reorganisation.
	1974	3 February	Discontinued under 1974 Bus Rationalisation.

Service 192 (1974 – 1988)

Operator	Year	Date	Service changes
	1974	3 February	Re-numbered from Service 192A as a service between Pasir Panjang Rd Ter and Sth Canal Ter under 1974 Bus Rationalisation.
	1979	11 November	Amended to ply Ganges Ave towards Pasir Panjang Rd Ter with the realignment of Delta Circus.
		16 December	Extended to Jurong Int.
	1982	24 May	Amended to ply West Coast Highway.
	1988	18 December	Integrated with Service 51 and discontinued.

Service 192A (1971 – 1974)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Clementi Rd Ter and Sth Canal Ter under 1971 Bus Reorganisation.
		14 September	Amended to Pasir Panjang Rd Ter.
		28 September	Amended to ply the extended Ganges Ave towards Sth Canal Ter.
	1972	11 June	Amended to ply Upp Cross St with the partial conversion of Havelock Rd to one-way road, skipping Upp Hokien St.
	1974	3 February	Re-numbered Service 192 under 1974 Bus Rationalisation.

Service 193 (1971 – 1991)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Commonwealth Ave Ter and Sth Canal Ter under 1971 Bus Reorganisation.
		25 April	Integrated with Service 190 and extended to loop at Tg Pagar Rd from Commonwealth Ave Ter.
		28 September	Amended to ply the extended Ganges Ave towards Tg Pagar Rd.
		4 November	Extended to Bt Timah Ter.
	1972	11 June	Amended to ply the extended Upp Cross St with the partial conversion of Havelock Rd to one-way traffic, skipping New Bridge Rd.
	1974	3 February	Amended to terminate at Tg Pagar Ter under 1974 Bus Rationalisation.
		8 December	Amended to ply Cecil St, skipping Robinson Rd.
	1976	TBC	Extended to Upp Bt Timah Rd Ter.
	1979	11 February	Amended to ply the extended Shenton Way, Rambau St and Trafalgar St towards Tg Pagar Ter, skipping Parsi Rd.
		1 August	Amended to Anson Rd Ter.
		11 November	Amended to ply Ganges Ave towards Upp Bt Timah Rd Ter with the realignment of Delta Circus.
		25 November	Amended to ply Pickering St and Church St, skipping Nth Canal Rd and Market St.
		30 December	Amended to ply Jln Anak Bt towards Anson Rd Ter with the partial conversion of Upp Bt Timah Rd to one-way traffic.
	1980	14 December	Amended to Princess Elizabeth Ter.
	1985	27 January	Amended to Prince Edward Ter with the closure of Anson Rd Ter.
	1987	28 June	Amended to Shenton Way Ter.
	1991	28 April	Discontinued under TransitLink Network Integration Exercise Phase 4.

Service 193A (1971 – 1974)

Operator	Year	Date	Service changes
ABC	1971	18 April	Introduced between Commonwealth Ave Ter and Sth Canal Ter.
		25 April	Integrated with Service 190 and extended to loop at Tg Pagar Rd from Commonwealth Ave Ter.
	1972	11 June	Amended to ply the extended Upp Cross St with the partial conversion of Havelock Rd to one-way traffic, skipping New Bridge Rd.
	1974	3 February	Amended to Sth Canal Ter and re-numbered Service 189 under 1974 Bus Rationalisation.

Service 194 (1971 – 1993)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Sth Canal Ter and Yong Siak St (Loop) under 1971 Bus Reorganisation.
	1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
	1976	28 March	Amended to ply Kim Pong Rd, skipping Seng Poh Rd and Lim Liak St.
	1987	6 April	Skips removed bus stop before College Rd along Outram Rd.
		1 November	Amended to ply Eu Tong Sen St to facilitate the second stage of road expansion along New Bridge Rd.
	1988	20 March	Amended to ply New Bridge Rd, skipping Sth Bridge Rd and Neil Rd.
	1993	4 April	Discontinued under TransitLink Network Integration Exercise Phase 12.

Service 197 (1971 – 1974)

Operator	Year	Date	Service changes
ABC	1971	11 April	Introduced between Keppel Rd Ter and Jln Samulun Ter under 1971 Bus Reorganisation.
		10 November	Extended to Crawford St Ter.
	1974	3 February	Discontinued under 1974 Bus Rationalization.

Service 199 (1971 – 1974)

Operator	Year	Date	Service changes
ABC	1971	21 July	Introduced between Prince Edward Ter and Dunearn Rd (Dunearn Hostel) (Loop).
	1973	11 March	Amended to ply Zion Rd and Hoot Kiam Rd towards Dunearn Rd with the partial conversion of Kim Seng Rd and Irwell Bank Rd to one-way traffic.
	1974	3 February	Discontinued under 1974 Bus Rationalization.

Service 201 (1971 – 1993)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Jln Jurong Kechil Ter and Pasir Panjang Rd Ter under 1971 Bus Reorganisation.
	1974	3 February	Integrated with Service 207 and extended to Toh Tuck Rd End Ter under 1974 Bus Rationalisation.
	1979	30 December	Amended to ply Jln Anak Bt towards Pasir Panjang Rd Ter with the partial conversion of Upp Bt Timah Rd to one-way traffic.
	1981	25 May	Shortened to loop at Jln Anak Bt from Pasir Panjang Rd Ter with the introduction of Service 205.
		5 July	Amended to Kent Ridge Ter.
	1986	1 June	Skips removed bus stop before Ayer Rajah Rd along Clementi Rd.
	1987	19 April	Serves new staggered bus stop under the PIE Flyover along Jln Anak Bt, skipping the bus stop opposite Bt Timah Plaza.
			Amended to use new access road from Upp Bt Timah Rd to Jln Anak Bt, skipping BKE.
	1993	4 April	Discontinued with the introduction of Service 151 under TransitLink Network Integration Exercise Phase 12.

Service 202 (1971 – 1978)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Corporation Dr Ter and Intl Rd Ter under 1971 Bus Reorganisation.
	1976	3 May	Extended to Gul Rd Ter.
	1977	28 March	Amended to Boon Lay Gdns Ter.
	1978	1 June	Discontinued.

Service 202 (1978 – 1993)

Operator	Year	Date	Service changes
	1978	27 November	Introduced between Bt Timah Ter and Commonwealth Ave (Loop), operating on weekdays and Saturdays only.
	1979	25 June	First bus brought forward to 0600 hrs on weekdays and Saturdays.
		17 December	Amended to ply Nth Buona Vista Rd and Commonwealth Ave West, skipping Dover Rd and Dover Ave.
		30 December	Amended to ply Jln Anak Bt towards Commonwealth Ave with the partial conversion of Upp Bt Timah Rd to one-way traffic.
	1987	19 April	Serves new staggered bus stop under the PIE Flyover along Jln Anak Bt, skipping the bus stop opposite Bt Timah Plaza.
	1988	11 July	Amended to start from Buona Vista Ter, loop at Jln Anak Bt, integrated with Service 212 and amended to ply Nth Buona Vista Rd, Dover Rd and Dover Ave.
	1990	TBC	Extended to operate on Sundays & Public Holidays.
	1993	23 May	Amended to ply Holland Dr, Holland Ave and Commonwealth Ave towards Jln Anak Bt.
		5 December	Integrated with Service 74 and discontinued under TransitLink Network Integration Exercise Phase 14.

Service 203 (1971 – 1978)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Corporation Dr Ter and Jln Boon Lay Ter under 1971 Bus Reorganisation.
	1977	28 March	Amended to Boon Lay Gdns Ter.
	1978	1 June	Discontinued.

Service 203 (1980 – 1988)

Operator	Year	Date	Service changes
	1980	14 November	Introduced between Commonwealth Dr Ter and Margaret Dr (Loop).
	1988	18 December	Integrated with Service 195 and discontinued.

Service 204 (1971 – 1978)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Corporation Dr Ter and Jln Besi Ter under 1971 Bus Reorganisation.
		TBC	Extended to Benoi Rd Ter.
	1977	28 March	Amended to Boon Lay Gdns Ter.
	1978	1 June	Discontinued.

Service 204 (1981 – 1986)

Operator	Year	Date	Service changes
	1981	19 October	Introduced between Admiralty Rd Ter and Sg Kadut Dr (Loop), operating on weekdays and Saturdays only.
		29 November	Amended to Woodlands Int.
	1983	10 July	Operations transferred to TIBS.
	1986	6 April	Integrated with Service 208 to form Service 925 and discontinued.

Service 205 (1971 – 1978)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Corporation Dr Ter and Jln Samulun Ter under 1971 Bus Reorganisation.
	1977	28 March	Amended to Boon Lay Gdns Ter.
	1978	1 June	Discontinued.

Service 205 (1981 – 1991)

Operator	Year	Date	Service changes
	1981	25 May	Introduced between Clementi Int and Jln Anak Bt (Loop).
	1987	19 April	Serves new staggered bus stop under the PIE Flyover along Jln Anak Bt, skipping the bus stop opposite Bt Timah Plaza.
			Amended to use new access road from Upp Bt Timah Rd to Jln Anak Bt, skipping BKE.
	1988	11 July	Amended to ply Toh Tuck Rise, Lor Kismis and Toh Tuck Terr.
	1990	11 March	Amended to ply Toh Tuck Ave, skipping Old Toh Tuck Rd.
	1991	7 April	Integrated with Service 173 and discontinued under TransitLink Network Integration Exercise Phase 3.

Service 206 (1971 – 1993)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Choa Chu Kang Rd Ter and Tg Kling Rd Ter.
		TBC	Extended to Lim Chu Kang Ter.
	1978	1 June	Amended to Jurong Int.
	1990	1 July	Amended to Boon Lay Int.
	1993	18 July	Discontinued with the introduction of Services 175 and 405.

Service 207 (1971 – 1974)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Bt Timah Depot and Toh Tuck Rd End Ter under 1971 Bus Reorganisation.
	1974	3 February	Integrated with Service 201 and discontinued under 1974 Bus Rationalisation.

Service 207 (1980 – 1990)

Operator	Year	Date	Service changes
	1980	9 November	Introduced between Bedok Int and Upp Changi Rd (Loop).
	1990	2 September	Discontinued.

Service 208 (1971 – 1986)

Operator	Year	Date	Service changes
UBC	1971	11 April	Introduced between Marsiling Ave Ter and Kranji Rd Ter under 1971 Bus Reorganisation.
	1974	3 February	Extended to Upp Bt Timah Rd Ter under 1974 Bus Rationalisation.
		17 November	Amended to ply Marsiling Ave and Marsiling Dr.
	1976	6 June	Amended to start from Admiralty Rd Ter and shortened to loop at Kranji Way.
	1981	29 November	Amended to Woodlands Int.
	1983	10 July	Operations transferred to TIBS.
	1986	6 April	Integrated with Service 204 to form Service 925/925# and discontinued.

Service 209 (1974 – 1988)

Operator	Year	Date	Service changes
	1974	3 February	Re-numbered from Service 154A as a service between Crawford St Ter and Benoi Rd Ter under 1974 Bus Rationalisation.
	1975	2 February	Amended to ply new slip road from Tiong Bahru Rd to Outram Rd with the conversion of Seng Poh Rd to one-way traffic.
	1977	17 May	Amended to ply Commonwealth Ave Extension and Nth Buona Vista Rd towards Benoi Rd Ter.
	1978	15 January	Amended to ply Jln Sultan and Beach Rd, skipping Sumbawa Rd and Nth Bridge Rd.
		1 June	Shortened to Commonwealth Ave Ter.
		31 July	Extended to Clementi Ter.
	1980	16 November	Amended to Clementi Int.
	1987	6 April	Skips removed bus stop before College Rd along Outram Rd.
		27 September	Amended to ply the extended Eu Tong Sen St towards Crawford St Ter to facilitate the first stage of road expansion along New Bridge Rd.
		1 November	Amended to ply Eu Tong Sen St to facilitate the second stage of road expansion along New Bridge Rd.
	1988	8 March	Amended to ply Clementi Ave 3 with the abolition of right turning from Clementi Ave 3 to Commonwealth Ave West.
		31 July	Discontinued.

Service 245 (1977 – 1990)

Operator	Year	Date	Service changes
	1977	6 June	Introduced between Boon Lay Gdns Ter and Pandan Rd (Loop).
	1978	1 June	Amended to Jurong Int.
	1990	1 July	Integrated with Service 78 and discontinued with the opening of Boon Lay Int.

Service 247 (1978 – 1991)

Operator	Year	Date	Service changes
	1978	1 June	Introduced between Jurong Int and Jurong Pier Rd (Loop).
	1981	14 June	Amended to skip Fishery Port Rd and Jln Tepong towards Jurong Int.
	1990	1 July	Amended to Boon Lay Int and amended to ply Jurong Port Rd, Jln Tepong, Fishery Port Rd and Jln Buroh in both directions.
	1991	20 January	Integrated with Service 98 and discontinued under TransitLink Network Integration Exercise Phase 2.

Service 247A (1978 – 1987)

Operator	Year	Date	Service changes
	1978	22 June	Introduced between Boon Lay Gdns Ter and Jurong Pier Rd (AM Peak) and between Jurong Pier Rd and Boon Lay Gdns Ter (PM Peak) as a peak hour one-directional service on weekdays and Saturdays.
	1987	5 October	Discontinued.

Service 248 (1978 – 1992)

Operator	Year	Date	Service changes
	1978	1 June	Introduced between Jurong Int and Neythal Rd (Loop).
	1990	1 July	Amended to Boon Lay Int.
	1992	29 March	Integrated with Service 250 and discontinued.

Service 249A (1978 – 1987)

Operator	Year	Date	Service changes
	1978	16 June	Introduced between Boon Lay Gdns Ter and Jln Samulun (AM Peak) and between Jln Samulun and Boon Lay Gdns Ter (PM Peak) as a peak hour one-directional service on weekdays and Saturdays.
	1986	29 June	Serves new bus stop outside Jurong Shipyard along Tg Kling Rd.
	1987	5 October	Discontinued.

Service 250 (1978 – 2001)

Operator	Year	Date	Service changes
	1978	1 June	Introduced between Jurong Int and Sixth Lokyang Rd (Loop).
	1990	1 July	Amended to Boon Lay Int, skipping Jln Ahmad Ibrahim and Pioneer Rd.
	1992	29 March	Integrated with Service 248 and amended to ply Enterprise Rd, Kwong Min Rd/Wan Lee Rd, Soon Lee Rd and Fan Yoong Rd.
	2001	11 February	Integrated with Services 192 and 252 and discontinued.

Service 250A (1978 – 1987)

Operator	Year	Date	Service changes
	1978	22 June	Introduced between Boon Lay Gardens Ter and Lokyang Way (AM Peak) and between Intl Rd and Boon Lay Gdns Ter (PM Peak) as a peak hour one-directional service on weekdays and Saturdays.
	1987	5 October	Discontinued.

Service 251A (1978 – 1987)

Operator	Year	Date	Service changes
	1978	22 June	Introduced between Boon Lay Gdns Ter and Refinery Rd (AM Peak) and between Refinery Rd and Boon Lay Gdns Ter (PM Peak).
	1987	5 October	Discontinued.

Service 253 (1978 – 2001)

Operator	Year	Date	Service changes
	1978	1 June	Introduced between Jurong Int and Benoi Rd (Loop).
	1987	12 April	Serves 5 additional pairs of bus stops along Jln Ahmad Ibrahim.
	1990	1 July	Amended to Boon Lay Int.
	1995	15 January	Amended to ply Pioneer Rd and Benoi Sector.
			Skips 3 pairs of bus stops along Jln Ahmad Ibrahim.
	2001	11 February	Integrated with Services 251, 255 and 257 and discontinued.

Service 254 (1977 – 1978)

Operator	Year	Date	Service changes
	1977	6 June	Introduced between Boon Lay Gdns Ter and Gul Cres (Loop) as a peak hour service on weekdays and Saturdays.
	1978	1 June	Discontinued with the introduction of Service 255.

Service 256 (2015 – 2017)

Refer to this article.

Service 390 (1981 – 1993)

Operator	Year	Date	Service changes
	1981	28 June	Introduced between Queen St Ter and Changi Airport PTB (Loop) under Changi Airport Bus Plan 1981.
	1983	25 June	Amended to start from Changi Airport PTB and extended to loop at Tomlinson Rd under Changi Airport Bus Plan 1983.
	1986	16 February	Extended to start from Holland Rd Ter and loop at Changi Airport PTB.
	1989	11 June	Amended to start from Changi Airport PTB, shortened to loop at Tomlinson Rd and amended to ply Temasek Blvd, Raffles Blvd and Raffles Ave.
	1990	13 October	Serves Changi Airport PTB 2 on its return journey towards the city.
		16 December	Serves Changi Airport PTB 1 and PTB 2 in both directions.
	1991	7 July	Serves new bus stop outside PA Sea Sports Ctr along ECP.
	1992	19 July	Amended to ply Orchard Lk, skipping Grange Rd.
	1993	5 December	Discontinued under TransitLink Network Integration Exercise Phase 14.

Service 391 (1981 – 1983)

Operator	Year	Date	Service changes
	1981	22 February	Introduced between Changi Pt Ter and Nicoll Dr (Loop) as a peak hour service under Changi Airport Bus Plan 1981.
		28 June	Extended to loop at Changi Airport Cargo Cplx and converted to full day service.
	1983	25 June	Integrated with Service 9 and discontinued under Changi Airport Bus Plan 1983.

Service 392 (1981 – 1983)

Operator	Year	Date	Service changes
	1981	28 June	Introduced between Somapah Int and Changi Airport PTB (Loop) under Changi Airport Bus Plan 1981.
	1983	25 June	Integrated with Service 394 and SSB Service 727 to form Service 24 and discontinued under Changi Airport Bus Plan 1983.

Service 393 (Jun – Nov 1981)

Operator	Year	Date	Service changes
	1981	29 June	Introduced between Somapah Int and Changi Airport Cargo Cplx (Loop) as a peak hour service on weekdays and Saturdays under Changi Airport Bus Plan 1981.
		2 November	Integrated with Service 395 and discontinued.

Service 394 (1981 – 1983)

Operator	Year	Date	Service changes
	1981	3 May	Introduced between Bedok Int and Changi Airport PTB (Loop) under Changi Airport Bus Plan 1981.
		11 May	Converted to peak hour service on weekdays and Saturdays.
		28 June	Reverted to daily full day service.
	1983	25 June	Integrated with Service 392 and SSB Service 727 to form Service 24 and discontinued under Changi Airport Bus Plan 1983.

Service 395 (1981 – 1983)

Operator	Year	Date	Service changes
	1981	29 June	Introduced between Bedok Int and Changi Airport Cargo Cplx (Loop) as a peak hour service on weekdays and Saturdays under Changi Airport Bus Plan 1981.
		2 November	Integrated with Service 393 and amended to call at Somapah Int in both directions.
	1982	29 March	Last bus (AM peak) extended to 1000 hrs on weekdays & Saturdays. Last bus (PM peak) extended to 2000 hrs on weekdays, and 1600 hrs on Saturdays.
	1983	25 June	Integrated with Service 9 and discontinued under Changi Airport Bus Plan 1983.

Service 402 (1975 – 1982)

Operator	Year	Date	Service changes
	1975	11 May	Introduced between Stamford Rd (Capitol Theatre) and Bt Timah Race Course (Loop), operating on racing days that fall on Sundays only.
	1982	28 February	Discontinued.

Service 402 (1994 – 1995)

Operator	Year	Date	Service changes
	1994	3 September	Introduced between Bedok Int and National Service Resort & Country Club (NSRCC) on a 3-month trial period, operating on weekends and public holidays only.
	1995	26 February	Discontinued.

Service 402 (2006 – 2019)

Refer to this article.

Service 404 (1978 – 1980)

Operator	Year	Date	Service changes
	1978	4 June	Introduced between Jurong Int and Science Ctr Rd (Loop), operating on Sundays and Public Holidays only.
	1980	16 June	Discontinued.

Service 405 (1978 – 1979)

Operator	Year	Date	Service changes
	1978	4 June	Introduced between Jurong Int and Jln Ahmad Ibrahim (Jurong Bird Pk) (Loop), operating on Sundays and Public Holidays only.
	1979	23 December	Discontinued.

Service 406 (1978 – 1989)

Operator	Year	Date	Service changes
	1978	4 June	Introduced between Jurong Int and Chinese Gdn Rd/Japanese Gdn Rd (Loop), operating on Sundays and Public Holidays only.
	1989	22 October	Integrated with Service 199 and discontinued.

Service 450 (1978 – 1990)

Operator	Year	Date	Service changes
	1978	3 June	Introduced between Jurong Int and Pasir Laba Rd (Loop), operating during Saturday afternoons and during the night on Sundays and Public Holidays.
	1990	1 July	Discontinued.

Service 700 (1998 – 2020)

Refer to this article.

Service 700A (1999 – 2020)

Refer to this article.

Service 850 (1985 – 1992)

Operator	Year	Date	Service changes
	1985	3 February	Introduced between Yishun Ctrl Ter and Bt Merah Int.
	1987	23 August	Amended to Yishun Int.
		13 December	Serves new staggered bus stop outside Orchard Stn along Orchard Blvd, skipping the bus stop opposite Orchard Stn.
			Serves new bus stop outside Newton Stn along Scotts Rd.
	1988	28 February	Revised to operate on weekdays and Saturdays only with the introduction of Service 850#.
	1991	3 November	Serves additional bus stop after Jln Bt Merah along Kg Bahru Rd.
	1992	20 September	Integrated with Service 167 and discontinued under TransitLink Network Integration Exercise Phase 9.

Service 850# (1988 – 1992)

Operator	Year	Date	Service changes
	1988	28 February	Introduced between Yishun Int and Bt Merah Int as an alternate route of Service 850 via Marina Ctr, operating on Sundays and Public Holidays only.
	1991	3 November	Serves additional bus stop after Jln Bt Merah along Kg Bahru Rd.
	1992	20 September	Integrated with Service 167 and discontinued under TransitLink Network Integration Exercise Phase 9.

Service 857 (1992 – 1996)

Operator	Year	Date	Service changes
	1992	20 September	Introduced between Yishun Int and Admiralty Rd West Ter under TransitLink Network Integration Exercise Phase 9.
	1996	10 March	Integrated with Service 169 and discontinued under Woodlands MRT Rationalisation.

Service 860 (Jun – Dec 1998)

Operator	Year	Date	Service changes
	1998	12 June	Introduced between Sengkang Ter and Hougang St 21 (Loop).
		13 December	Extended to World Trade Ctr Ter and re-numbered Service 865.

Service 864 (1998 – 1999)

Operator	Year	Date	Service changes
	1998	15 November	Introduced between Sengkang Ter and Marina Ctr Ter.
	1999	1 February	Amended to relocated Sengkang Ter, serving Compassvale Rd towards Sengkang Ter.
		25 July	Operations transferred to SBS.
		12 December	Integrated with Service 84 to form Service 80 and discontinued.

Service 865 (1998 – 1999)

Operator	Year	Date	Service changes
	1998	13 December	Re-numbered from Service 860 as a service between Sengkang Ter and World Trade Ctr Ter.
	1999	1 February	Amended to relocated Sengkang Ter, serving Sengkang East Way towards World Trade Ctr Ter.
		25 July	Operations transferred to SBS.
		12 December	Re-numbered Service 85.

Service 866 (Feb – Dec 1999)

Operator	Year	Date	Service changes
	1999	21 February	Re-numbered from Service 59 as a service between Sengkang Ter and Ang Mo Kio Int.
		25 July	Operations transferred to SBS.
		5 December	Serves new pair of bus stops outside Blk 190C and outside Blk 298A along Punggol Rd.
		12 December	Re-numbered Service 86.

Service 926 (1988 – 2020)

Refer to this article.

Service 950 (1989 – 1996)

Operator	Year	Date	Service changes
	1989	19 March	Introduced between Marsiling Ter and Shenton Way Ter.
	1993	11 April	Amended to ply Victoria St, skipping Nth Bridge Rd.
	1994	TBC	Serves an additional pair of bus stops after Tanglin CC and outside Raffles Town Club along Whitley Rd.
	1996	4 February	Amended to Woodlands Reg Int.
		10 March	Discontinued under Woodlands MRT Rationalisation.

Service 951 (1990 – 1996)

Operator	Year	Date	Service changes
	1990	10 June	Introduced between Marsiling Ter and Jurong Int.
		1 July	Amended to Boon Lay Int.
	1996	4 February	Amended to Woodlands Reg Int.
		10 March	Shortened to Bt Panjang Ter and re-numbered Service 180 under Woodlands MRT Rationalisation.

Service 952 (1992 – 1996)

Operator	Year	Date	Service changes
	1992	26 January	Introduced between Marsiling Ter and Marina Ctr Ter.
		19 July	Amended to ply Orchard Lk due to the closure of Grange Rd to facilitate road expansion works.
	1995	7 May	Amended to ply Orchard Turn.
	1996	4 February	Amended to Woodlands Reg Int.
		10 March	Discontinued under Woodlands MRT Rationalisation.

Service 971 (2020 – 2022)

Refer to this article.

Service 979M (2016 – 2018)

Refer to this article.

Service 985W (2006 – 2007)

Operator	Year	Date	Service changes
	2006	15 October	Introduced between Choa Chu Kang Int and Lor 1 Geylang Ter via Bt Batok Rd and Bt Batok West Ave 7 on a 3-month trial.
	2007	14 October	Discontinued.

Service 989 (2001 – 2003)

Operator	Year	Date	Service changes
	2001	5 August	Introduced between Choa Chu Kang Int and Changi Airport.
	2003	TBC	Serves new bus stop outside Goh & Goh Bldg along Jln Jurong Kechil.
		TBC	Converted to loop service between Choa Chu Kang Int and Changi Airport PTB 2.
		27 July	Integrated with Service 185 to form Service 985 and discontinued.

Service CBD1 (1978 – 1989)

Operator	Year	Date	Service changes
	1978	27 March	Introduced between Tg Pagar Rd Ter and Tomlinson Rd (Loop) as a peak hour service operating on weekdays and Saturdays only.
	1979	1 August	Amended to Anson Rd Ter.
	1981	11 October	Serves new staggered bus stop outside Tunas Bldg along Anson Rd, skipping the bus stop outside Intl Plaza.
	1983	26 December	Converted to full day service and enhanced to operate on Sundays and Public Holidays.
	1985	13 January	Extended to World Trade Ctr Ter.
	1987	5 January	Skips the bus stop outside Clifford Ctr along Collyer Quay.
	1988	24 January	Shortened to Marina Ctr Ter.
	1989	11 June	Discontinued.

Service CBD2 (1978 – 1981)

Operator	Year	Date	Service changes
	1978	27 March	Introduced between Holland Rd Fringe Car Pk and New Bridge Rd (Loop) as a peak hour service operating on weekdays and Saturdays only.
	1981	TBC	Discontinued.

Service SS1 (1987 – 1988)

Operator	Year	Date	Service changes
	1987	13 December	Introduced between Yio Chu Kang Ter and Yishun Ring Rd (Loop) as a temporary shuttle service.
	1988	20 December	Discontinued with the opening of Khatib and Yishun MRT stations.

Service SS2 (Mar – Nov 1988)

Operator	Year	Date	Service changes
	1988	13 March	Introduced between Clementi Int and Jurong East St 32 (Loop) as a temporary shuttle service.
		6 November	Discontinued with the opening of Jurong East MRT station.

Service SS3 (1988 – 1990)

Operator	Year	Date	Service changes
	1988	13 March	Introduced between Clementi Int and Bt Batok West Ave 7 (Loop) as a temporary shuttle service.
		5 November	Amended to Jurong East Int with the opening of Jurong East MRT station.
	1989	5 March	Serves additional pair of bus stops outside and opposite Blk 102 along Bt Batok Ave 1.
	1990	11 March	Discontinued with the opening of Bt Batok and Bt Gombak MRT stations.

Service SS4 (Nov – Dec 1989)

Operator	Year	Date	Service changes
	1989	5 November	Introduced between Tampines Int and New Upp Changi Rd (Tanah Merah Stn) (Loop) as a temporary shuttle service.
		17 December	Discontinued with the opening of Tampines MRT station.

Service SS5 (Nov – Dec 1989)

Operator	Year	Date	Service changes
	1989	5 November	Introduced between Tampines Int and New Upp Changi Rd (Tanah Merah Stn) (Loop) as a temporary shuttle service.
		17 December	Discontinued with the opening of Tampines MRT station.

Service SS6 (Nov – Dec 1989)

Operator	Year	Date	Service changes
	1989	5 November	Introduced between Simei Rd and New Upp Changi Rd (Tanah Merah Stn) (Loop) as a temporary shuttle service.
		17 December	Discontinued with the opening of Simei MRT station.

Service SS7 (1990 – 1996)

Operator	Year	Date	Service changes
	1990	11 March	Introduced between Woodlands Int and Choa Chu Kang Ave 4 as a temporary shuttle service.
		8 April	Amended to Choa Chu Kang Int.
	1996	4 February	Amended to Woodlands Reg Int.
		10 March	Discontinued with the opening of Choa Chu Kang, Marsiling and Woodlands MRT stations under Woodlands MRT Rationalisation.

Service M1 (1989 – 1997)

Operator	Year	Date	Service changes
	1989	11 September	Introduced between Nth Buona Vista Rd and Mt Sinai Dr (Loop), operating on weekdays and Saturdays only.
	1994	17 January	Extended to start from Science Pk Dr.
		TBC	First bus revised to 0630 hrs.
	1997	6 October	Re-numbered Service 92.

Service M2 (1989 – 1997)

Operator	Year	Date	Service changes
	1989	5 November	Introduced between Jln Kembangan and Fidelio St (Loop), operating daily.
	1993	30 October	Amended to ply Sims Ave East towards Fidelio St, skipping Frankel Ave and Siglap Dr.
	1994	11 September	Amended to ply Taman Kembangan, skipping Jln Lapang.
	1997	5 October	Re-numbered Service 42.

Service M3 (1989 – 1992)

Operator	Year	Date	Service changes
	1989	6 November	Introduced between Jln Limau Manis and Lucky Hts (Loop), operating on weekdays and Saturdays only.
	1992	29 March	Discontinued.

Service M4 (1989 – 1997)

Operator	Year	Date	Service changes
	1989	6 November	Introduced between Eunos Ter and Marine Parade Rd (Loop), operating on weekdays and Saturdays only.
		10 December	Amended to Eunos Int.
	1992	3 May	Extended to operate on Sundays and Public Holidays.
	1993	TBC	Serves the bus stop outside Eunos Stn along Sims Ave with the abolition of the bus stop after Eunos Cres.
	1997	5 October	Integrated with Service 15 and discontinued.

Service BPS1 (2011 – 2019)

Refer to this article.

---

External Links & References:

• SGWiki: History of Bus Services

Back to Bus Articles