Shuttle 37C: Tai Seng—Serangoon Shuttle Bus Service

Shuttle 37C is a Rail Replacement Service for the Circle Line (CCL), operating one-way from Tai Seng to Serangoon without intermediate stops.

The service will operate on weekday morning peak hours from 5 January 2026 to 13 April 2026 (originally planned till 17 April 2026). During this period, CCL train services will be affected by tunnel maintenance works, which will take place daily from 17 January to 9 April 2026 (originally planned till 19 April 2026).

Although modified CCL train operations and tunnel maintenance works commence on Saturday, 17 January 2026, Shuttle 37C will begin operations earlier on Monday, 5 January 2026, to allow commuters to familiarise themselves with the shuttle bus arrangements.

This service was originally planned to operate till 17 April 2026. With the early completion of works and regular train service resuming on 10 April 2026 (as announced on 26 March 2026), Shuttle 37C will operate at reduced frequencies on 10 & 13 April 2026, with the last day of service on Monday 13 April 2026.

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Note: Shuttle 37C will not operate during Chinese New Year Eve, 16 February 2026.

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This Shuttle Bus Service serves the following MRT Stations:

• CC11 Tai Seng
• CC13NE12 Serangoon

Publicity Poster

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Other Shuttle Bus Services (Jan–Apr 2026)

During the period of Reduced Circle Line Services for Tunnel Maintenance Works (Jan–Apr 2026), the following shuttle bus services are also offered on Weekdays (except Public Holidays):

• Shuttle 38: Paya Lebar ↔ Stadium
  (2 ways; Morning & Evening Peak Hours)
• Shuttle 37A: Serangoon → Tai Seng → MacPherson → Paya Lebar
  (1 way; Morning Peak Hours)
• Shuttle 37B: Tai Seng → Bishan
  (1 way express; Evening Peak Hours)

Shuttle bus services are offered from 5 January 2026 to 13 April 2026, both dates inclusive.
Operations between 14 and 17 April 2026 were cancelled with the early completion of works after 9 April 2026.

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History of Activation

Shuttle 37C Activation:
January – April 2026 (LI)	Tai Seng—Serangoon (SBST)

• EC: Early Closure | LO: Late Opening | EEC: Extended Early Closure | SC: Sunday Closure | LI: Longer Intervals

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Bus Fares:

Charges regular distance fare based on the distance between MRT Stations by rail. Train, bus and hybrid concession passes are accepted, and distance fare rules apply.

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Gallery:

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History:

• 2025 (01 Dec): Route announced for Reduced Circle Line Services from January to April 2026 (Tai Seng – Serangoon)

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See Also:

• Reduced Circle Line Services for Tunnel Maintenance Works (Jan–Apr 2026)

External Links & References:

• Train Service Adjustments to Circle Line for Tunnel Works – Land Transport Authority
• Land Transport Authority Facebook Post

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