Scheme B Bus Services

Scheme B Bus Services (part of Supplementary Bus Services) complement existing basic bus services by providing additional capacity primarily during peak hours. These services are provided by private bus operators, such as private-hire or school bus operators.

These bus services are subject to a different regulatory framework by the Public Transport Council (PTC) as compared to regular basic and basic-plus bus routes operated by public transport operators. Information on these bus services (exact routing, fares and departure times) are not readily published, making them notoriously difficult to find. While these reflect on greater flexibility on the part of private bus operators, these services often go unnoticed by the general public due to low outreach and infrequent departures.

List Of Scheme B Bus Services:

Service Route
621 [AM] Bedok Reservoir Road → Shenton Way
[PM] Palmer Road → Bedok Reservoir Road
623 [AM] Boon Lay Gardens → Jalan Samulun
[PM] Jalan Samulun → Boon Lay Gardens
625 [AM] Boon Lay Gardens → Shenton Way
[PM] Anson Road → Boon Lay Gardens
640 [AM] Canberra Road → Anson Road
[PM] Anson Road → Canberra Road


Scheme B Bus Services were initially introduced to supplement existing Singapore Bus Service Ltd (SBS) routes back in the late 1970s. An initial four services (247A, 249A, 250A and 251A) operated as unidirectional peak hour services from Boon Lay Garden Bus Terminal to the Jurong & Tuas Industrial Estates, replacing lost transport links when many existing services were amended to the then-newly opened Jurong Bus Interchange.

Initially operated by SBS, these services were later transferred to private bus operators, making them the very first Scheme B bus routes, with several more introduced. Poor demand led to the withdrawal of these Scheme B services based out of Boon Lay Garden. In 1997, all existing Scheme B bus routes were renumbered into the 6XX series.

Scheme B bus services were reflected on the old bus stop poles on white background metal plates. When the bus stop poles were all replaced in 2009 by LTA, the bus services reflected on these poles initially did not include the Scheme B bus services; they were only reflected in October 2014.

Since there was no readily available and updated information about these bus services, the Land Transport Guru Admin Team appreciates more information about these Services. If you have information about these services, please do contact us by filling the form below. Your contribution is greatly appreciated.

External Links & References

23 thoughts on “Scheme B Bus Services

  • 25 May 2023 at 11:52 AM

    Is scheme b bus 621 to shenton way still in operation on weekdays?

  • 18 December 2019 at 7:32 AM

    I observed from the driver of Service 625 that the route starts from Blk 503 in Jurong West during morning peak.

  • 8 August 2019 at 4:00 PM

    Like FF(Fast Forward), rebranded to express, scheme B buses can be rebranded as city direct.

    • 16 February 2021 at 3:00 PM

      All of them except for 623

  • 5 August 2019 at 2:53 PM

    May I know is 625 still operating and will passby TradeHub 21 in the morning and evening?


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