History of Defunct Express 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:

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For discontinued non-basic bus services (including those withdrawn before 2010), you may refer to their respective articles that provide more details on their background and operational periods:


Service 74e (2006 – 2022)

Refer to this article.

Service 147e (2018 – 2020)

Refer to this article.

Service 151e (2006 – 2022)

Refer to this article.

Service 167e (2018 – 2020)

Refer to this article.

Service 188R (2010 – 2020)

Refer to this article.

Service 501 (1997 – 2003)

Operator Year Date Service changes
SBS 1997 5 May Introduced between Hougang Ctrl Int and Penang Rd (AM Peak) and between Anson Rd and Hougang Ctrl Int (PM Peak) as a peak hour one-directional service on weekdays and Saturdays.
22 December Converted to a day service on weekdays and Saturdays, looping at Penang Rd.
2000 10 September Extended to Sengkang Ter.
2001 28 April Amended to Sengkang Temp Int.
SBS Transit 2003 18 January Amended to Sengkang Integrated Transport Hub.
27 July Discontinued under North East MRT Line Rationalisation Phase 2.

Service 501X (1997 – 2003)

Operator Year Date Service changes
SBS 1997 22 December Introduced between Hougang Ctrl Int and Temasek Ave (Loop) as an alternate route of Service 501, operating during off peak periods on weekdays and Saturdays and throughout the day on Sundays and Public Holidays.
2000 10 September Extended to Sengkang Ter.
2001 28 April Amended to Sengkang Temp Int.
SBS Transit 2003 18 January Amended to Sengkang Integrated Transport Hub.
27 July Discontinued under North East MRT Line Rationalisation Phase 2.

Service 502B (2005 – 2010)

Refer to this article.

Service 503 (1997 – 1999)

Operator Year Date Service changes
SBS 1997 5 May Introduced between Tampines Int and Temasek Ave (Opp Centennial Twr) during morning peak hours and between Anson Rd (Apex Twr) and Tampines Int during evening peak hours as a peak hour one-directional service on weekdays and Saturdays.
1999 30 August Extended to start from Pasir Ris Int, extended to loop at Telok Blangah Rd, converted to full day service and re-numbered Service 505.

Service 505 (1999 – 2000)

Operator Year Date Service changes
SBS 1999 30 August Re-numbered from Service 503 as a service between Pasir Ris Int and Telok Blangah Rd (Loop), operating daily.
2000 10 September Shortened to loop at Temasek Ave and re-numbered Service 518.

Service 507 (1999 – 2004)

Operator Year Date Service changes
SBS 1999 30 August Introduced between Boon Lay Int and Shenton Way (Opp Temasek Twr) during morning peak hours and between Anson Rd (Intl Plaza) and Boon Lay Int during evening peak hours as a peak hour one-directional service on weekdays and Saturdays.
SBS Transit 2004 22 August Discontinued.

Service 508 (1999 – 2000)

Operator Year Date Service changes
SBS 1999 30 August Introduced between Sengkang Ter and Penang Rd (Park Mall) during morning peak hours and between Anson Rd (Apex Twr) and Sengkang Ter during evening peak hours as a peak hour one-directional service on weekdays and Saturdays.
22 November Serves an additional bus stop outside Outram Pk Stn along Outram Rd and 2 additional bus stops opposite Maritime Hse and outside Southpoint along Cantonment Rd during morning peak hours.
Extended to start from Outram Rd (Outram Pk Stn) during evening peak hours.
2000 11 September Shortened to Hougang Ctrl Temp Ter and re-numbered Service 511.

Service 511 (2000 – 2003)

Operator Year Date Service changes
SBS 2000 11 September Re-numbered from Service 508 as a peak-hour one-directional service between Hougang Ctrl Temp Ter and Penang Rd (Park Mall) during morning peak hours and between Outram Rd (Outram Pk Stn) and Hougang Ctrl Temp Ter during evening peak hours on weekdays and Saturdays.
SBS Transit 2003 27 July Discontinued under North East MRT Line Rationalisation Phase 2.

Service 512 (2000 – 2003)

Operator Year Date Service changes
SBS 2000 11 September Introduced between Hougang Ctrl Temp Ter and Orchard Rd (Le Meridien Shop Ctr) during morning peak hours and between Moulmein Rd (Opp Tan Tock Seng Hosp) and Hougang Ctrl Temp Ter during evening peak hours as a peak hour one-directional service on weekdays and Saturdays.
SBS Transit 2002 7 July Skips the bus stop outside Orchard Emerald along Orchard Rd.
2003 27 July Discontinued under North East MRT Line Rationalisation Phase 2.

Service 518B (2005 – 2010)

Refer to this article.

Service 520 (1997 – 2003)

Operator Year Date Service changes
Trans Island 1997 5 May Introduced between Yishun Int and Outram Rd (Opp Outram Pk Stn) during morning peak hours and between New Bridge Rd Ter and Yishun Int during evening peak hours as a peak hour one-directional service on weekdays and Saturdays.
7 December Amended to ply Upp Pickering St, 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.
2002 20 April Amended to ply the reinstated New Bridge Rd, skipping Upp Pickering St, Sth Bridge Rd, Neil Rd and Cantonment Rd.
TBC Serves bus stop outside Blk 923 along Yishun Ave 2, skipping the bus stop outside Northpoint Shop Ctr.
2003 24 August Discontinued.

Service 521 (1999 – 2002)

Operator Year Date Service changes
Trans Island 1999 1 September Introduced between Bt Panjang Ter and World Trade Ctr Ter, operating daily.
26 December Amended to Bt Panjang Int.
2000 TBC Serves additional pair of bus stops outside and opposite ITE Dover along AYE.
2002 29 September Extended to Woodlands Reg Int, amended to ply Bt Batok East Ave 4, converted to trunk service and re-numbered Service 963.

Service 963R (2010 – 2020)

Refer to this article.

Service 971E (2011 – 2020)

Refer to this article.


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