Welcome to the revamped Singapore Public Bus Timeline, which provides an overview of changes made to the public bus network in Singapore since 1971.
This article lists public bus changes that occurred between 11 Apr 1971 and 31 Dec 2009, excluding changes to defunct bus services withdrawn during this period. For public bus changes after the abovementioned period, please click the attached links for the timelines in the 2010s or 2020s.
Year 1971:
| Date | Bus Service(s) | Service Change(s) |
| 11 Apr | 2 | New service between Changi Pt Ter and Commonwealth Ave |
| 10 | New service between Bedok Rd and Prince Edward Ter | |
| 12 | New service between Bedok Rd and Commonwealth Ave | |
| 13 | New service between Bedok Rd and Commonwealth Ave | |
| 32 | New service between Changi Rd and Mei Chin Rd | |
| 33 | New service between Changi Rd and Clementi Rd | |
| 40 | New service between Telok Kurau Rd and Prince Edward Ter | |
| 51 | New service between Jln Eunos and Labrador Ter | |
| 61 | New service between MacPherson Ter and Labrador Ter | |
| 62 | New service between MacPherson Ter and Rumah Tinggi Ter | |
| 64 | New service between MacPherson Ter and Commonwealth Ave | |
| 65 | New service between MacPherson Ter and Lower Delta Rd | |
| 70 | New service between Jln Kayu Ter and Lor 5 Geylang | |
| 81 | New service between Upp Changi Ter and New Bridge Rd Ter | |
| 82 | New service between Punggol Ter and Prince Edward Ter | |
| 93 | New service between Paya Lebar Airport and Labrador Ter | |
| 103 | New service between Serangoon Gdn Ter and Commonwealth Ave | |
| 111 | New service between Upp Serangoon Rd (10.5 km) and Commonwealth Ave | |
| 123 | New service between St. Michael’s Ter and Sth Canal Ter | |
| 124 | New service between St. Michael’s Ter and Kg Bahru Rd | |
| 125 | New service between St. Michael’s Ter and Labrador Ter | |
| 130 | New service between Balestier Rd and Tg Pagar Rd | |
| 131 | New service between Balestier Rd and Tg Pagar Rd | |
| 143 | New service between Lor 6 Toa Payoh and Jurong Rd Mkt (16.2 km) | |
| 145 | New service between Lor 1 Toa Payoh and Keppel Harbour | |
| 147 | New service between Lor 6 Toa Payoh and Commonwealth Ave | |
| 153 | New service between Lor 1 Toa Payoh and Jln Bt Merah | |
| 154 | New service between MacPherson Ter and Intl Rd | |
| 155 | New service between Kim Keat Ave and Bedok Rd | |
| 163 | New service between Yio Chu Kang Rd and Prince Edward Ter | |
| 165 | New service between Yio Chu Kang Rd and Jln Boon Lay | |
| 170 | New service between Queen St Ter and Johore Bahru Ter | |
| 171 | New service between Sembawang Ter and Queen St Ter | |
| 172 | New service between Lim Chu Kang Ter and Prince Edward Ter | |
| 173 | New service between Princess Elizabeth Ter and New Bridge Rd Ter | |
| 174 | New service between Nanyang University and New Bridge Rd Ter | |
| 195 | New service between Crawford St Ter and Lower Delta Rd (Loop) | |
| 196 | New service between Lower Delta Rd and Jln Samulun | |
| 198 | New service between New Mkt Rd and Jln Boon Lay | |
| 200 | New service between Upp Bt Timah Rd (Ewart Circus) and Sth Buona Vista Rd | |
| 2 May | 61, 64 | Route extension to Ulu Pandan Ter |
| 145 | Route extension to Pasir Panjang Rd | |
| 9 May | 13 | Route amendment to Upp Changi Rd, Changi Rd, Geylang Rd, Kallang Rd, Crawford St, Nth Bridge Rd/Victoria St and Stamford Rd |
| 123 | Route extension to Kg Bahru Rd | |
| 19 May | 33 | Route extension to Pasir Panjang Rd |
| 6 Jun | 198 | Route amendment to Sth Canal Ter |
| 16 Jun | 10 | Route extension to Shipyard Rd |
| 22 Jun | 157 | New service between Lor 1 Toa Payoh and Jln Samulun |
| 2 Aug | 143, 145, 147, 153, 155, 157 | Route amendment to Toa Payoh Town Centre |
| 8 Aug | 158 | New service between Toa Payoh Town Centre and Opera Est |
| 21 Sep | 139 | New service between Toa Payoh Town Centre and Lengkok Bahru |
| 28 Sep | 32, 51, 139, 165, 198 | Route amendment to extended Ganges Ave |
| 4 Oct | 163 | Route extension to Jln Kayu Ter |
| 6 Dec | 40, 64, 123, 125, 130, 145 | Handover of operations to UBC |
| 61, 111, 131, 143 | Handover of operations to ABS | |
| 124 | Handover of operations to ABC | |
| TBC | 125 | Route extension to Delta Circus |
| TBC | 200 | Route extension to Upp Bt Timah Rd (Bt Panjang Circus) |
Year 1972:
| Date | Bus Service(s) | Service Change(s) |
| 11 Jun | 32, 51, 143, 165, 198 | Route amendment to extended Upp Cross St |
| 18 Jun | 64, 65, 81, 82, 103, 111, 147 | Route amendment to Bendemeer Rd |
| 24 Dec | 10 | Route amendment to Jln Samulun (towards Shipyard Rd) |
Year 1973:
| Date | Bus Service(s) | Service Change(s) |
| 11 Mar | 65 | Route amendment to Hoot Kiam Rd towards MacPherson |
| 195 | Route amendment to Zion Rd towards Lower Delta Rd | |
| 25 Jun | 171 | Route amendment to Mandai Lake Rd until 2200 hrs daily |
| 1 Jul | 32, 33, 40, 158 | Route extension to Chai Chee Ter |
Year 1974:
| Date | Bus Service(s) | Service Change(s) |
| 3 Feb | 12, 13 | Route amendment to Upp Changi Rd (13.3 km) |
| 14 | New service between Bedok Rd and Commonwealth Ave | |
| 30 | New service between Chai Chee Ter and Jln Ahmad Ibrahim | |
| 73 | New service between Toa Payoh Town Centre and Yio Chu Kang Rd | |
| 100 | New service between Serangoon Gdn Ter and Prince Edward Ter | |
| 103 | Route extension to Jln Kayu Ter | |
| 106 | New service between Serangoon Gdn Ter and Commonwealth Ave | |
| 125 | Route extension to Jln Bt Merah | |
| 130 | Route extension to Sin Ming Rd Ter | |
| 135 | New service between Toa Payoh Town Centre and Bedok Rd | |
| 155 | Route cutback to Chai Chee Ter | |
| 158 | Route amendment to skip Opera Est | |
| 165 | Route amendment to Lornie Rd, Adam Rd, Farrer Rd, Holland Rd, Ulu Pandan Rd and Clementi Rd | |
| 167 | New service between Rotherham Gate and New Bridge Rd Ter | |
| 172 | Route amendment to skip Choa Chu Kang Rd End | |
| 178 | New service between Corporation Dr and Upp Bt Timah Rd (Bt Panjang Circus) | |
| 189 | New service between Commonwealth Ave and Sth Canal Ter | |
| 196 | Route extension to Prince Edward Ter | |
| 198 | Route extension to Jln Kolam Ayer | |
| 200 | Route extension to Pasir Panjang Rd | |
| 24 Feb | 13, 14, 64, 65, 111, 123, 124, 143, 167, 173, 174 | Route amendment to Grange Rd, Orchard Blvd and Paterson Rd |
| 1 Oct | 64, 65, 111, 195, 198 | New bus stop outside Nan Hwa Girls’ High Sch along Bencoolen St |
| 64, 65, 81, 103, 106, 111, 139, 198 | New merged bus stop outside Sri Srinivasa Perumal Tp along Serangoon Rd | |
| 10 Nov | 10, 14, 135 | Route amendment to Upp Changi Rd (13.3 km) |
| 1 Dec | 2 | Route amendment to New Upp Changi Rd, Bedok Sth Rd, Bedok Sth Ave 3, Upp East Coast Rd and Bedok Rd |
| 13, 33, 40 | Route cutback to Upp Changi Rd (Track 6) | |
| 155 | Route extension to Upp Changi Rd (13.3 km) | |
| 8 Dec | 10, 30, 40, 82, 100 | Route amendment to extended Robinson Rd |
| 125, 130, 131, 163, 172, 189 | Route amendment to Cecil St |
Year 1975:
| Date | Bus Service(s) | Service Change(s) |
| 2 Feb | 2, 33, 62, 103, 147, 189 | Route amendment to new slip road from Tiong Bahru Rd to Outram Rd |
| 123 | Route amendment to Zion Rd and Ganges Ave towards St. Michael’s | |
| 195 | Route amendment to Tiong Bahru Rd and extended Zion Rd towards Crawford St | |
| 2 Mar | 2, 13, 33, 51, 61, 62, 100, 135, 155 | Route amendment to Sims Ave |
| 12, 14, 32 | Route amendment to Sims Ave and Lor 1 Geylang | |
| 70 | Route amendment to Geylang Rd | |
| 25 May | 2 | Route amendment to Bedok Sth Ave 3 and New Upp Changi Rd |
| 19 Jul | 131 | Route amendment to Coleman St and Armenian St |
| 163 | Route amendment to Coleman St and Hill St | |
| 21 Jul | 100, 125 | Route amendment to St. Andrew’s Rd and Stamford Rd |
| 125 | Route amendment to Telok Blangah Way | |
| 2 Nov | 12, 103 | Temporary route amendment to roadside terminus along Holland Dr |
| 9 Nov | 157, 174, 178 | Route amendment to realigned Jurong Rd |
| 174 | Route amendment to Farrer Rd, Holland Rd, Napier Rd, Tanglin Rd and Orchard Rd | |
| 14 Nov | 2 | Route amendment to New Upp Changi Rd |
| 16 Nov | 13, 40 | Route cutback to Chai Chee Ter |
| 11 Dec | 12 | Route amendment to New Upp Changi Rd, Bedok Sth Ave 2, Bedok Sth Rd and Bedok Sth Ave 1 |
| 14 Dec | 125 | Route amendment to Kg Java Rd |
| TBC | 2 | Route amendment to Changi Village Ter |
Year 1976:
| Date | Bus Service(s) | Service Change(s) |
| 8 Feb | 14, 32 | Route cutback to Mei Chin Rd |
| 15 Feb | 10, 30, 40 | New staggered bus stop outside Overseas Union Finance along Robinson Rd |
| 82, 100 | New staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd | |
| 14 Mar | 40, 82, 100, 163, 172 | New staggered bus stop outside The Cenotaph along Connaught Dr |
| 9 May | 196 | Route amendment to Jurong Pier Rd in both directions |
| 13 Jun | 147 | Route amendment to Lower Delta Rd |
| 18 Jul | 124 | Route extension to loop at Telok Blangah Rise |
| 2 Aug | 16 | New service between Marine Terr and Henderson Rd |
| 8 Aug | 123 | Route amendment to loop at New Bridge Rd |
| 16 Aug | 100 | Route amendment to skip MacPherson Est in both directions |
| 23 Aug | 167 | Route amendment to Admiralty Rd West Ter and Tg Pagar Rd |
| 169 | New service between Marsiling Ter and Sembawang Rd (Loop) | |
| 1 Oct | 93 | Route amendment to relocated bus terminus along Jln Ang Teng |
| 24 Oct | 401 | New service between Chai Chee Ter and East Coast Pk Svc Rd (Loop) on Sundays & Public Holidays |
| 22 Nov | 166 | New service between Ang Mo Kio Ave 3 and New Bridge Rd Ter |
| 13 Dec | 198 | Route extension to Sims Pl Ter |
| 30 Dec | 135 | Route amendment to Sims Ave/Geylang Rd and extended Tg Katong Rd |
Year 1977:
| Date | Bus Service(s) | Service Change(s) |
| 17 Jan | 12 | Route amendment to Bedok Sth Ave 3 and Bedok Sth Rd |
| 31 Jan | 169 | Route extension to roadside terminus along Ang Mo Kio Ave 3 |
| 27 Mar | 16 | Route amendment to relocated roadside terminus along Marine Terr |
| 28 Mar | 178 | Route extension to Boon Lay Gdns Ter |
| 3 Apr | 403 | New service between Pasir Ris Rd and Tampines Rd (Loop) on Sundays & Public Holidays |
| 11 Apr | 40 | Conversion to peak hour one-directional service on weekdays & Saturdays only |
| 25 Apr | 159 | New service between Toa Payoh Town Centre and Ang Mo Kio Ave 6 |
| 16 May | 70 | Route cutback to Jln Kayu Ter, route extension to Prince Edward Ter and route amendment to Guillemard Rd |
| New alternate route via Piccadilly Rd on weekdays & Saturdays only | ||
| 240 | New feeder service between Boon Lay Gdns Ter and Yuan Ching Rd (Loop) | |
| 246 | New service between Boon Lay Gdns Ter and Jln Tukang (Loop) | |
| 17 May | 2, 13, 106, 111, 147, 189, 196, 198, 200 | Route amendment to extended Commonwealth Ave and Nth Buona Vista Rd |
| 6 Jun | 13 | Route extension to Ghim Moh Ter |
| 19 Jun | 13, 14, 64, 111, 174 | Route amendment to Orchard Blvd and Grange Rd |
| 11 Jul | 73 | Route amendment to Yio Chu Kang Rd |
| 29 Aug | 2, 106, 111, 147, 189 | Route amendment to Holland Ave, Holland Dr and Nth Buona Vista Rd towards Commonwealth Ave |
| 12, 103 | Route reinstatement to Nth Buona Vista Rd and Commonwealth Ave | |
| 61, 64 | Route amendment to Holland Ave and Holland Rd | |
| 4 Sep | 401 | Route amendment to loop at Amber Rd |
| 19 Sep | 165 | Route extension to roadside terminus along Ang Mo Kio Ave 3 |
| 31 Oct | 100, 106 | Route amendment to skip Serangoon Gdns Est |
| 217 | New feeder service between Serangoon Gdn Ter and Berwick Dr (Loop) | |
| 7 Nov | 106 | Route amendment to Holland Ave, Holland Rd, Napier Rd, Tanglin Rd, Orchard Rd/Orchard Blvd/Grange Rd/Somerset Rd/Penang Rd |
| 21 Nov | 61 | Route amendment to Jln Kolam Ayer, Kallang Bahru and Lavender St |
| 28 Nov | 16 | Route extension to Telok Blangah Hts |
Year 1978:
| Date | Bus Service(s) | Service Change(s) |
| 15 Jan | 82 | Route amendment to Jln Sultan |
| 195 | Route amendment to Jln Sultan and Beach Rd | |
| 16 Jan | 70 | Route amendment to skip Piccadilly Rd permanently |
| 22 Jan | 189 | Route amendment to Commonwealth Ave, Queensway, Commonwealth Dr, Commonwealth Ave and Queen’s Circus |
| 23 Jan | 107 | New weekday & Saturday semi-express service between Serangoon Gdn Ter and Shenton Way (Loop) |
| 5 Mar | 125, 163, 166 | Route amendment to Keng Lee Rd |
| 13 Mar | 33 | Route cutback to Chai Chee Ter |
| 1 Jun | 10, 30, 154, 157, 165, 178, 196, 198, 240, 246 | Route amendment to Jurong Int |
| 40 | Reversion to full day service | |
| 154 | Route amendment to MacPherson Rd, Bendemeer Rd, Whampoa Nth, Serangoon Rd and Jln Toa Payoh | |
| 178 | Route amendment to Jurong Rd | |
| 197 | New service between Jurong Int and Geylang Fringe Car Pk | |
| 240 | Route amendment to loop at Boon Lay Pl | |
| 246 | Route amendment to loop at Boon Lay Dr | |
| 249 | New service between Jurong Int and Jln Samulun (Loop) | |
| 251 | New service between Jurong Int and Refinery Rd (Loop) | |
| 255 | New service between Jurong Int and Gul Circle (Loop) | |
| 257 | New service between Jurong Int and Gul Rd (Loop) | |
| 3 Jul | 199 | New day service between Jurong Int and Nanyang Ave (Loop) on weekdays & Saturdays |
| 27 Jul | 136 | New service between Ang Mo Kio Ave 6 and Upp Serangoon Rd (10.5 km) |
| 261 | New feeder service between Ang Mo Kio Ave 6 and Ang Mo Kio St 43 (Loop) | |
| 4 Sep | 14 | Route amendment to Nicoll Highway |
| 9 Oct | 132 | New service between Ang Mo Kio Ave 6 and Orchard Rd (Loop) |
| 2 Dec | 131 | Route amendment to Balestier Rd, Jln Dusun and Jln Datoh |
| 3 Dec | 125, 163, 166 | Route amendment to Mayne Rd and Bt Timah Rd |
| 4 Dec | 136 | Route extension to loop at Upp Serangoon Ter |
| 29 Dec | 133 | New service between Ang Mo Kio Ave 6 and Nth Bridge Rd (Loop) |
| TBC | 123 | Route amendment to Moulmein Rd |
Year 1979:
| Date | Bus Service(s) | Service Change(s) |
| 15 Jan | 189 | Route amendment to loop at Empress Pl and route amendment to Jln Bt Merah, Kg Bahru Rd and New Bridge Rd/Neil Rd |
| 11 Feb | 10, 30, 107, 125, 189, 196 | Route amendment to extended Shenton Way |
| 40, 70, 82, 100, 163, 172 | Route amendment to extended Shenton Way, Palmer Rd and Anson Rd | |
| 130, 131 | Route amendment to extended Shenton Way, Rambau St and Trafalgar St towards Tg Pagar Rd | |
| 25 Feb | 30 | Route extension to Bedok Int |
| 11 Mar | 7 | New semi-express service between Bedok Int and Holland Rd Fringe Car Pk (Loop) |
| 19 Mar | 261 | Route amendment to loop at Ang Mo Kio Ind Pk 1 |
| 262 | New feeder service between Ang Mo Kio Ave 6 and Ang Mo Kio Ave 1 (Loop) | |
| 9 Apr | 9 | New weekday & Saturday peak hour service between Geylang Fringe Car Pk and Changi Village Ter |
| 7 May | 32 | Route extension to Bedok Int |
| 21 May | 14, 16 | Route amendment to Stadium Blvd and Stadium Wk after 1930 hrs daily |
| 27 May | 31 | New service between Bedok Int and Stadium Wk (Loop) |
| 16 Jul | 74 | New service between Ang Mo Kio Ave 6 and Clementi Ave 3 |
| 284 | New feeder service between Clementi Ave 3 and Clementi Ave 4 (Loop) | |
| 1 Aug | 130, 131 | Route amendment to roadside terminus along Anson Rd |
| 145 | Route amendment to Lim Teck Kim Rd and Cantonment Rd | |
| 167 | Route amendment to temporary roadside terminus along Lim Teck Kim Rd | |
| 1 Oct | 199 | Route amendment to Corporation Rd, Jurong Rd and Upp Jurong Rd |
| 14 Oct | 2, 7, 9, 13, 32 | Route amendment to Sims Ave East |
| 30, 33 | Route amendment to Still Rd and Sims Ave East | |
| 40 | Route amendment to Lor Sarina and Sims Ave East towards Chai Chee | |
| 155 | Route amendment to Still Rd and Joo Chiat Pl towards Upp Changi Rd | |
| 225 | New feeder service between Bedok Int and Bedok Nth St 3 (Loop) via Bedok Nth Ave 2 | |
| 26 Oct | 73 | Route amendment to Old Upp Thomson Ter |
| 28 Oct | 25 | New service between Ang Mo Kio Ter and Bedok Int |
| 125, 163, 166, 170, 171, 172 | Route amendment to Sungei Rd | |
| 125, 163, 166, 170, 171 | Route amendment to westbound Bt Timah Rd | |
| 130 | Route amendment to Ophir Rd and Blanco Ct towards Anson Rd | |
| 170, 171 | Route amendment to Ophir Rd/Rochor Canal Rd and Ban San St | |
| 195 | Route amendment to Weld Rd and Jln Besar towards Lower Delta Rd | |
| 11 Nov | 32, 51, 139, 198 | Route amendment to westbound Ganges Ave |
| 12 Nov | 199 | Route amendment to Boon Lay Way and Jln Boon Lay |
| 14 Nov | 33 | Route amendment to Joo Chiat Pl and Telok Kurau Rd |
| 21 Nov | 240 | Route amendment to Boon Lay Way, Yuan Ching Rd and Kang Ching Rd |
| 25 Nov | 14 | Route extension to roadside terminus along Jln Bt Merah |
| 30 | Route amendment to Sims Ave/Changi Rd/Geylang Rd and Tg Katong Rd | |
| 32 | Route cutback to loop at Upp Cross St | |
| 64 | Route cutback to loop at Mei Chin Rd | |
| 9 Dec | 225 | Route amendment to Bedok Nth St 3 and Bedok Nth Ave 2 towards Bedok Int |
| 23 Dec | 14, 139, 153 | Route amendment to roadside terminus along Bt Merah Ctrl |
| 167 | Route amendment to Anson Rd Ter | |
| 282 | New feeder service between Clementi Ave 3 and Clementi Ave 2 (Loop) | |
| 30 Dec | 157, 170, 171, 172, 173, 174, 200 | Route amendment to Jln Anak Bt |
| TBC | 10, 12, 14, 135, 155 | Relocation of roadside terminus to Upp Changi Rd (15.5 km) |
| TBC | 74, 132 | Route amendment to roadside terminus along Ang Mo Kio Ave 3 |