Tower Transit Bus Service 859A

For Service 859A in the reverse direction, check out Service 859B.

Tower Transit Bus Service 859A is a supplementary trunk route from Sembawang Interchange and looping at Admiralty Link, passing through Canberra Road and Sembawang Crescent in a counter-clockwise loop fashion. Service 859B plies the same route in the clockwise direction.

Both 859A and 859B are route variants of Bus Service 859 serving only within the Sembawang residential estate, and were introduced in their present form under the Bus Service Enhancement Programme (BSEP) on Sunday, 17 August 2014.

Sembawang Int
↺ Admiralty Link (Loop)
58009 Sembawang Int B2 NS11 Sembawang Vista
58259 Opp Sun Plaza Sembawang Dr
58219 Opp Sembawang Stn NS11 Sembawang Way
58111 Blk 351 CP Canberra Rd
58121 Blk 424A CP Canberra Rd
58401 Opp Blk 491 Admiralty Link
58411 Blk 404A CP Admiralty Link
58341 Blk 405 Sembawang Dr
58321 Bet Blks 357/359 Admiralty Dr
58271 Blk 335 Sembawang Cres
58281 Sembawang Sec Sch Sembawang Cres
58371 Bet Blks 325/326 Sembawang Cres
58299 Blk 328 Sembawang Dr
58241 Sembawang Int/Opp Blk 315 NS11 Sembawang Vista
58009 Sembawang Int NS11 Sembawang Vista
Route Overview
Route WAB_logo_20px Sembawang Bus Interchange ↺ Admiralty Link (Loop)
Passes Through Canberra Rd, Sembawang Dr, Admiralty Dr, Sembawang Cres
Route Length
5.1 km
Travelling Time 20 – 25 mins
Operator Information
BCM Route Package Sembawang–Yishun Bus Package
Current Operator Tower Transit Singapore Pte Ltd
(Tower Transit Singapore)
Current Depot Mandai Bus Depot
Current Fleet Single Deck Bus
– MAN A22
– Volvo B5LH
Double Deck Bus
– Alexander Dennis Enviro500
– MAN A95

Operating Hours
Departure Times from Sembawang Daily
05:30 – 01:00
Operating Frequency
6:30am–8.30am 8.31am–4.59pm 5.00pm–7.00pm After 7.00pm
Loop Service
22 mins 10 – 22 mins 13 mins 10 – 30 mins
Fare Information
Fare Charges regular distance fares

Bus Service 859A is a route variant of Bus Service 859. It duplicates Service 859 within the Sembawang residential estate, departing Sembawang Interchange and making a counter-clockwise loop via Canberra Rd, Admiralty Link, Sembawang Dr, Admiralty Dr and Sembawang Cres before terminating at Sembawang Interchange.

Service 859A was previously a short-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. Service enhancements as part of the Bus Service Enhancement Programme (BSEP) upgraded it to a full-day supplementary bus service. In addition, Service 859B was introduced, plying the same route as Service 859A in the opposite direction.

The A and B suffixes used do not represent these routes as Short-Trip Services, 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.

During Eves of Public Holidays, as well as MRT Early Closure affecting Sembawang MRT Station, operating hours will be extended. Exact last bus hours are announced by Tower Transit closer to these dates.

MRT Station Served
Route Variants
  • Service 859: Sembawang Bus Interchange ↺ Yishun Bus Interchange (Loop)
  • Service 859B: Sembawang Bus Interchange ↺ Sembawang Cres (Loop)

Gallery (Tower Transit):

Gallery (SMRT Buses) at Page 2.

Poster Gallery

Operator History
  • 2007 – 02 Oct 2021: SMRT Buses Ltd
  • 03 Oct 2021 – Present: Tower Transit Singapore Pte Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2026 under the Sembawang–Yishun Bus Package.

  • 2007 (01 Oct): Introduced as a short-trip service from Sembawang Int to Sembawang Vista (Opp Blk 315), operating after the last bus of Service 859 daily
  • 2014 (17 Aug): Converted from a short working trip to a full day service between Sembawang Int and Admiralty Link (Loop) under the Bus Service Enhancement Programme (BSEP)
  • 2019 (05 Oct): Last bus timing from Sembawang amended from 00:55 to 01:00
  • 2021 (03 Oct): Operations transferred to Tower Transit under the Sembawang-Yishun Bus Package

Past Routings

Back to Bus Services
Back to Bus Articles

2 thoughts on “Tower Transit Bus Service 859A

  • 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.

    • 19 March 2019 at 9:07 PM

      Enviro500 performed on 859A during evening peak on today 19 March 2019.


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