SBS Transit Bus Service 122

SBS Transit Bus Service 122 is a residential trunk route from Kampong Bahru Bus Terminal and looping at Commonwealth Drive, passing through Tiong Bahru, Alexandra Road, Kay Siang Road, Margaret Drive and Commonwealth MRT Station.

Kampong Bahru Ter
↺ C'wealth Dr (Loop)
10499 Kampong Bahru Ter Spooner Rd
10049 Opp Kampong Bahru Ter Kg Bahru Rd
10017 Aft Hosp Dr EW16NE3TE17 Eu Tong Sen St
06011 Outram Pk Stn Exit 7 EW16NE3TE17 Outram Rd
06051 Blk 55 Tiong Bahru Rd
10141 Blk 18 Tiong Bahru Rd
10151 Ctrl Green Condo Tiong Bahru Rd
10161 Opp Tiong Bahru Stn EW17 Tiong Bahru Rd
10381 Opp Blk 48 Lower Delta Rd
10241 Gan Eng Seng Sec Sch Alexandra Rd
10261 Delta Sports Hall Alexandra Rd
10271 Opp Tanglin View Alexandra Rd
10321 Aft Margaret Dr Tanglin Rd
10479 Aft Tanglin Rd Kay Siang Rd
10469 Bef Margaret Dr Kay Siang Rd
11499 Queenstown Pr Sch Margaret Dr
11489 Blk 30 Margaret Dr
11469 Queensway Sec Sch Margaret Dr
11061 Opp Queensway Sec Sch Queensway
11439 Blk 92 C'wealth Dr
11429 Opp Blk 115B C'wealth Dr
11169 C'Wealth Stn Exit B/C EW20 C'wealth Ave
11471 Opp The Fisherman Ch Margaret Dr
11481 Queenstown Lib Margaret Dr
11491 Opp Queenstown Pr Sch Margaret Dr
10461 Aft Margaret Dr Kay Siang Rd
10471 Bef Tanglin Rd Kay Siang Rd
10329 Crescent Girls' Sch Tanglin Rd
10279 Tanglin View Alexandra Rd
10269 Opp Delta Sports Hall Alexandra Rd
10249 Opp Gan Eng Seng Sec Sch Alexandra Rd
10389 Blk 48 Lower Delta Rd
10169 Tiong Bahru Stn EW17 Tiong Bahru Rd
10149 Blk 1 Tiong Bahru Rd
06049 Bef Outram Flyover Outram Rd
06029 Outram Pk Stn Exit 1 EW16NE3TE17 Outram Rd
10011 Bef Neil Rd New Bridge Rd
10041 Bef Kampong Bahru Ter Kg Bahru Rd
10499 Kampong Bahru Ter Spooner Rd
Route Overview
Route WAB_logo_20px Kampong Bahru Bus Terminal ↺ Commonwealth Drive (Loop)
Passes Through Outram Rd, Tiong Bahru Rd, Alexandra Rd, Kay Siang Rd, Margaret Dr
Route Length 16.7 km
Travelling Time 70 mins
Operator Information
BCM Route Package Bukit Merah Bus Package
Current Operator SBS Transit Ltd
Current Depot Ulu Pandan Bus Depot (UPDEP)
Current Fleet Single-deck buses
Operating Hours
Departure Times from Kampong Bahru
05:55 – 23:30
Operating Frequency
Loop Service 6:30am–8.30am 8.31am–4.59pm 5.00pm–7.00pm After 7.00pm
Weekdays 13 15 mins 14 20 mins 15 19 mins 18 24 mins
Saturdays 16 18 mins 16 18 mins 16 18 mins 17 25 mins
Sundays / Public Holidays 17 18 mins 16 19 mins 18 19 mins 17 25 mins
Fare Information
Fare Charges regular distance fares


Service 122 provides residents of Tiong Bahru, Alexandra, and Commonwealth Drive with greater connectivity to Outram Park, Tiong Bahru and Commonwealth MRT Stations, along with other amenities in the vicinity. It is the thirty-eighth (38th) bus service to be introduced under the Bus Service Enhancement Programme (BSEP), and the third new BSEP service originating from New Bridge Road after Service 121.

The inter-town service improves on existing bus connections in certain areas, notably Commonwealth Drive (previously only served by Service 195), and Margaret Drive (previously only served by Service 32), linking residential estates and amenities with transport nodes and enhancing connectivity to these areas. Apart from benefiting new residential developments near Dawson Road, such as the new HDB Skyville@Dawson and SkyTerrace developments, the route also serves schools such as – Gan Eng Seng, Manasseh Meyer, Queenstown Primary, Queensway Secondary, Assumption English, Crescent Girls and Alexandra Primary – as well as amenities such as Tiong Bahru Plaza and Singapore General Hospital.

MRT Stations Served
Special Departures
  • Commonwealth Drive (Blk 92)  Kampong Bahru Ter
    Weekdays: 06:00 & 06:14
    Saturdays: 06:00 & 06:13
    Sundays / Public Holidays: 06:00 & 06:11

Poster Gallery

Operator History
  • 2015 – Present: SBS Transit Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2029 under the Bukit Merah Bus Package.

  • 2015 (15 Mar): Introduced between New Bridge Road Terminal and Commonwealth Drive (Loop) under the LTA’s Bus Service Enhancement Programme (BSEP).
  • 2015 (22 Jun): Designated wheelchair-accessible bus service (WAB)
  • 2018 (10 Mar): Amended to Kampong Bahru Ter. First bus departure timings from Kampong Bahru brought forward by 5 minutes.
  • 2018 (18 Nov): Start of operations under Bukit Merah Bus Package (Tendered Contract)
  • 2021 (22 Aug): Serves relocated bus stop outside Blk 30, skipping abolished bus stop outside The Fisherman Church along Margaret Dr

Past Routings

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One thought on “SBS Transit Bus Service 122

  • 22 August 2021 at 12:46 AM

    This service can be made better if it can serve more of dawson area. Maybe after the loop around commonwealth instead of going back to magaret dr. It can serve queenstown mrt than turn to dawson rd serve some new bustops there den come out back to magaret dr.


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