SMRT Bus Service 859A / 859B


SMRT Bus Service 859A and 859B are supplementary trunk routes from Sembawang Interchange and looping at Admiralty Link, passing through Sembawang Crescent and Canberra Road. Service 859A operates the counter-clockwise loop, while Service 859B operates the clockwise loop.

Both routes duplicate their parent Service 859 and were introduced in their present form under the Bus Service Enhancement Programme (BSEP). They were launched on Sunday, 17 August 2014.

Route Information
Service SMRT Bus Service 859A
(Counter-clockwise loop)
SMRT Bus Service 859B
(Clockwise loop)
Route Sembawang Bus Interchange
↺ Admiralty Link (Loop)  
Sembawang Bus Interchange
↺ Admiralty Link (Loop)  
Passes Through Canberra Rd, Admiralty Dr, Sembawang Cres Sembawang Cres, Admiralty Dr, Canberra Rd,
Route Length 5.1 km 5.0 km
Travelling Time 20 mins 20 mins
Operator Information
Current Operator SMRT Buses
Current Depot Woodlands Bus Depot (WLDEP)
Current Fleet MAN NL323F MAN NL323F
Departure Times from T1 0550 – 0050 (Weekdays & Sat)
0605 – 0050 (Sundays & PHs)
0530 – 2350 (Daily)
Frequency Loop Service* Loop Service*
0630-0830: 10 – 26 min
0831-1659: 10 – 30 min
1700-1930: 10 – 30 min
After 1930: 10 – 28 min
0630-0830: 08 – 20 min
0831-1659: 08 – 26 min
1700-1930: 08 – 19 min
After 1930: 10 – 26 min
Notes* Departure times are staggered with Service 859.

Route History

Supplementary services 859A and 859B duplicate the routing of their parent Service 859, serving within the Sembawang housing estate. Both routes serve in opposite directions, with Service 859A taking the counter-clockwise loop and Service 859B taking the clockwise loop. The initiative to convert Service 859A to a full-day bus route, combined with the introduction of Service 859B, was part of the Bus Service Enhancement Programme (BSEP) which aims to increase bus capacity and current bus service levels.

Service 859A was previously a shortworking trip service terminating at Opp Blk 315, Sembawang Vista (outside Sembawang Interchange), operating from 12:00am to 12:50am after the last bus of Service 859 towards Yishun has departed. The new Service 859A is a supplementary bus service (having been converted to full-day operations), and will be be extended to terminate within Sembawang Bus Interchange.

Service 859B is the new supplementary bus service identical in routing to Service 859A, but running in the opposite direction, supplementing Service 859 in the direction of Sembawang Int. The route will call at all existing bus stops similar to Service 859.

The A and B suffixes used do not represent these routes as shortworking trips, but as route variants of Service 859. Such route numbering is similar to the Green and White plates (G/W suffix) used on SBS Transit feeder routes to indicate different directions of travel.

Both routes were launched on Sunday, 17 August 2014, to improve bus connectivity within the Sembawang estate and aid with high passenger loading on Service 859. The routes connect to public amenities such as Canberra Community Club, Sembawang Library, Sembawang Mart, Sembawang MRT Station, Sembawang Secondary School and Sun Plaza.

Route Variants:

  • Service 859: Sembawang Bus Interchange ↔ Yishun Bus Interchange

Fare: Charges basic fares. Refer to Fare Table.

Fleet: Services 859A and 859B operate on two MAN NL323F buses each, under the BSEP scheme.

Route Information:

SMRT Bus Service 859A
SMRT Bus Service 859B
  • Sembawang Vista (Sembawang Int)
  • Sembawang Dr (opp Sun Plaza)
  • Sembawang Way (opp Sembawang Stn)
  • Canberra Rd (Blk 351 CP)
  • Canberra Rd (Blk 424A CP)
  • Admiralty Link (opp Blk 491)
  • Admiralty Link (Blk 404A CP)
  • Sembawang Dr (Blk 405)
  • Admiralty Dr (bet Blks 357/359)
  • Sembawang Cres (Blk 335)
  • Sembawang Cres (Sembawang Sec Sch)
  • Sembawang Cres (bet Blks 325/326)
  • Sembawang Dr (Blk 328)
  • Sembawang Vista (opp Blk 315)
  • Sembawang Vista (Sembawang Int)
  • Sembawang Vista (Sembawang Int)
  • Sembawang Dr (Blk 317)
  • Sembawang Cres (opp Blk 325)
  • Sembawang Cres (opp Sembawang Sec Sch)
  • Sembawang Cres (opp Blk 336A CP)
  • Admiralty Dr (Blk 474)
  • Sembawang Dr (Blk 478)
  • Admiralty Link (Blk 482A CP)
  • Admiralty Link (Blk 491)
  • Canberra Rd (Blk 508 CP)
  • Canberra Rd (Blk 502A)
  • Sembawang Way (Sembawang Stn)
  • Sembawang Dr (Sun Plaza)
  • Sembawang Vista (Sembawang Int)

Operator History:

  • 2014 – Present: SMRT Buses Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2016. 



  • 2014 (17 Aug): Service 859A amended to its present form and Service 859B introduced under the BSEP. Both routes are wheelchair-accessible at introduction.

Past Routings:

  • Refer to this article
  • 2014: No significant route changes since 2014.




External Links & References:

  • TransitLink E-Guide – Service 859A
  • TransitLink E-Guide – Service 859B

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Back to Bus Articles


One thought on “SMRT Bus Service 859A / 859B

  1. Pingback: Service 859B | Public Buses SG

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