SBS Transit Bus Service 170A

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SBS Transit Bus Service 170A is a parallel bus service operating alongside its parent cross-border Service 170 (Red Plate). Plying unidirectionally from Queen Street Terminal to Woodlands Train Checkpoint at Woodlands Centre Road via Rochor, Bukit Timah, Upper Bukit Timah and Woodlands Road, the route duplicates the local sectors of Service 170 without crossing the border.

Previously an ad-hoc service, it was formally introduced from Sunday, 27 December 2015 to operate daily.

^ SBS Transit Mercedes-Benz Citaro (SBS6218B) – Service 170A

Route Information
Route Queen Street Bus Terminal → Woodlands Centre Road (Woodlands Train Checkpt)
Passes Through Rochor, Bukit Timah, Upp Bukit Timah, Woodlands Rd
Route Length 23.6km
Travelling Time 60 mins
Operator Information
Current Operator SBS Transit
Current Depot Bukit Batok Bus Depot (BBDEP)
Current Fleet 12-metre Single Deck Bus
Mercedes-Benz O530 Citaro
– Scania K230UB
Departure Times from T1 0600 – 0000 (Daily)
Frequency Direction 1 Direction 2
0630-0830: 18 – 19 mins
0831-1659: 14 – 22 mins
1700-1930: 20 – 21 mins
After 1930: 16 – 21 mins
0630-0830: 18 – 19 mins
0831-1659: 14 – 22 mins
1700-1930: 20 – 21 mins
After 1930: 16 – 21 mins

Route History

Service 170A is parallel bus service supplementing trips of its parent cross-border Service 170 (Red Plate). Plying unidirectionally from Queen Street Bus Terminal to Woodlands Train Checkpoint, the route duplicates the local sectors of Service 170 without crossing the border. Calling it a shortworking trip would be a misnomer – its route is far from short, standing at 23.6km long.

The route is designed to improve the reliability of its parent service 170 without sacrificing existing scheduled trips. Despite the Downtown Line and the other bus routes it duplicates along the Bukit Timah and Upper Bukit Timah corridor, SBS Transit has strived to continue keeping Bus 170 reliable for commuters who need it. Formerly operating at dismal frequencies owing to congestion across the Causeway and dodgy timekeeping, dedicated buses now reliably ply the local sectors of Service 170 in both directions. Hence was the need for Service 170A, differentiating the local buses from the cross-border buses by terminating at Woodlands Centre Road (Woodlands Train Checkpoint) before returning to Queen Street Terminal.

‘Withdrawn’ in the early 2000s, there was no mention of Service 170A until its reappearance in 2014 as an ad-hoc service. Details were not published by SBS Transit although they operated on weekend evenings to ease the high demand between Little India and workers’ dormitories along Woodlands Road, using cross-border buses drawn from Service 170’s fleet. Only on Sunday, 27 December 2015 was Service 170A formally introduced as a full-day service, operating daily.

Following the introduction of Service 170A, departures of Service 170 (Red Plate) were reduced.

Mode of operation

A full trip of Service 170A from Queen Street Terminal to Woodlands Centre Road (Woodlands Train Checkpoint) takes about one hour, and all passengers must alight at the terminating stop. The bus will then proceed to the next stop, Woodlands Centre Road (Opp Blk 1A), and begin its return journey towards Queen Street Terminal, operating as Service 170. For drivers, 170A would be more of a loop service with little time to rest at the looping point.

Service 170A buses and their drivers operate independently of Service 170 despite the many similarities. Their buses do not cross the border, and as such, are able to use non-cross-border buses such as Mercedes-Benz O530 Citaros. As such, local bus drivers can be deployed to Service 170A (Currently, SBS Transit rosters only Malaysian drivers to cross-border services). Departures from Queen Street Terminal are staggered with its parent Service 170 (Red Plate) to space buses apart.

On the Integrated Driver’s Fare Console (IDFC), Service 170A is displayed as Service 770. On the return trip, they use the regular Service 170.


Route Variants

  • Service 170: Queen Street Terminal ↔ Larkin Bus Terminal
  • Service 170X: (Kranji MRT ↺ JB Sentral Ter (Loop))

Fare: Charges fares for regular trunk services. See Bus Fares for exact fares.

Fleet: Mercedes-Benz Citaros are commonly deployed on Service 170A and subsequently perform special departures back down to Queen Street Ter from Woodlands Centre Rd. These buses do not need to be JB-registered as they do not cross the border into Malaysia.

Route Information:

Direction 1 Direction 2
  • Queen St Ter
  • Rochor Rd
  • Rochor Canal Rd
  • Bt Timah Rd
  • Upp Bt Timah Rd
  • Woodlands Rd
  • Woodlands Centre Rd
  • Woodlands Centre Rd
  • Woodlands Rd
  • Upp Bt Timah Rd
  • Jln Anak Bt
  • Dunearn Rd
  • Bt Timah Rd
  • Sungei Rd
  • Queen St Ter



SBS6136D – Service 170A SBS6218B – Service 170, a 170A bus
SBS8406L – Service 170A, pre-Dec 2015



  • 2015 (27 Dec): Official introduction of Shortworking Trip 170A with enhanced operating hours and terminating at Woodlands Train Checkpoint

Past Routings:

  • Refer to this article


External Links:

  • TransitLink E-Guide

Back to Bus Services
Back to Bus Articles


4 thoughts on “SBS Transit Bus Service 170A

  1. Well done SBST, this is really a good news for all the passengers who are waiting for the bus to woodlands train checkpoint or from woodlands train checkpoint to Kranji MRT daily.
    and If SBST can consider to replace all the existing 170/170x & 160 buses to Mercedes-Benz O530 Citaro would be fantastic as current bus is too small.

    • Impossible. Most Mercedes Benz are being bought over, and don’t forget about airport services, frequently crowded. Even though Mercedes have more seats than scania, it Is still crowded. The reason for scania in johor services is because they have more standing spaces, and at checkpoint is easier for ppl to alight

  2. Well Done SBST, this is really a good news for all passengers who travelling from Opp Kranji Stn to Woodlands Train Checkpoint and for those who travel from Woodlands Train Checkpoint to Kranji STN.

    If SBST can consider to replace the existing 170/170x& 160 buses to the Mercedes-Benz O530 Citaro would be fantastic as the existing bus is too small.

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