SMRT Bus Service 859A / 859B

SMRT Bus Service 859A and 859B are supplementary trunk routes from Sembawang Interchange and looping at Admiralty Link and Sembawang Crescent respectively, 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 within Sembawang and were introduced in their present form under the Bus Service Enhancement Programme (BSEP). They were launched on Sunday, 17 August 2014.


Bus Service 859A: Sembawang ↺ Admiralty Link (Loop) Bus Service 859B: Sembawang ↺ Sembawang Crescent (Loop)
From Sembawang From Sembawang
  • Sembawang Vista
    – Sembawang Int NS11
  • Sembawang Dr
    – Opp Sun Plaza NS11
  • Sembawang Way
    – Opp Sembawang Stn NS11
  • Canberra Rd
    – Blk 351 CP
    – Blk 424A CP
  • Admiralty Lane (Express)
  • Admiralty Lk
    – Opp Blk 491
    – Blk 404A CP
  • Sembawang Dr
    – Blk 405
  • Admiralty Dr
    – Bet Blks 357/359
  • Sembawang Cres
    – Blk 335
    – Sembawang Sec Sch
    – Bet Blks 325/326
  • Sembawang Dr
    – Blk 328
  • Sembawang Vista
    – Sembawang Int NS11
    – Sembawang Int NS11
  • Sembawang Vista
    – Sembawang Int NS11
  • Sembawang Dr
    – Blk 317
  • Sembawang Cres
    – Opp Blk 325
    – Opp Sembawang Sec Sch
    – Opp Blk 336A CP
  • Admiralty Dr
    – Blk 474
  • Sembawang Dr
    – Blk 478
  • Admiralty Lk
    – Blk 482A CP
    – Blk 491
  • Admiralty Lane (Express)
  • Canberra Rd
    – Blk 508 CP
    – Blk 502A
  • Sembawang Way
    – Sembawang Stn NS11
  • Sembawang Dr
    – Sun Plaza NS11
  • Sembawang Vista
    – Sembawang Int NS11


Technical Information
Service WAB_logo_20px SMRT Bus Service 859A SMRT Bus Service 859B
Route Sembawang Bus InterchangeAdmiralty Link (Loop) Sembawang Bus InterchangeSembawang Cres (Loop)
Passes Through Canberra Rd,
Admiralty Dr,
Sembawang Cres
Admiralty Dr, Admiralty Link, Canberra Rd
Route Length 5.1 km 5.0 km
Travelling Time 20 – 25 mins
Operator Information
BCM Route Package Sembawang – Yishun Bus Package
Current Operator SMRT Buses Ltd
Current Depot Ang Mo Kio Bus Depot (AMDEP)
Current Fleet 18-metre Single Deck Bus:
– Mercedes-Benz O405G
12-metre Single Deck Bus:
– MAN A22
– Mercedes-Benz O530 Citaro
Departure Times from Sembawang 0530hrs – 0055hrs (Daily)
Frequency Service 859A
Service 859B
0630hrs – 0830hrs: 08 – 20 mins
0831hrs – 1659hrs: 08 – 36 mins
1700hrs – 1900hrs: 10 – 22 mins
After 1900hrs: 12 – 25 mins
0630hrs – 0830hrs: 08 – 24 mins
0831hrs – 1659hrs: 08 – 25 mins
1700hrs – 1900hrs: 09 – 22 mins
After 1900hrs: 11 – 24 mins


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.

MRT Stations Served
Route Variants
  • Service 859: Sembawang Bus Interchange ↺ Yishun Temporary Bus Interchange (Loop)

Fare: Charges basic distance fares. See Bus Fares. Calculate your bus fare using LTA’s fare calculator on here.


Operator History
  • 2014 – Present: SMRT Buses Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2020 under the Sembawang – Yishun Bus Package.

  • 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:


External Links & References:

Back to Bus Services
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One thought on “SMRT Bus Service 859A / 859B

  • 5 July 2018 at 5:26 PM

    Last Tuesday I took SMB157S on 859A Full Route and SMB248M Training Bus was seen doing training along almost the full route of 859A.


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