SBS Transit Bus Service 123M

SBS Transit Bus Service 123M is a residential trunk route from Harbourfront Bus Interchange and looping at Tiong Bahru Rd, passing through Lower Delta Road. It is route variant of Service 123.


Bus Service 123M: Harbourfront ↺ Tiong Bahru Rd (Loop)
From Harbourfront
RED Plate
Looping at Tiong Bahru Rd
White Plate
  • Seah Im Rd
    – HarbourFront Int NE1CC29
  • Telok Blangah Rd
    – HarbourFront Stn Exit A NE1CC29
    – Opp VivoCity NE1CC29
  • Kg Bahru Rd
    – Bef Mt Faber Lodge
  • Lower Delta Rd
    – The Pearl @ Mt Faber
    – Blk 40
  • Bt Purmei Ave
    – Opp Blk 109
    – Blk 109
  • Lower Delta Rd
    – St. Theresa’s Convent
    – Cendex Ctr
    – Blk 129
  • Tiong Bahru Rd
    – Tiong Bahru Plaza EW17
    – Blk 1
  • Zion Rd (Express)
  • Seng Poh Rd (Express)
  • Tiong Bahru Rd
    – Blk 18
    – Ctrl Green Condo
    – Opp Tiong Bahru Plaza EW17
  • Lower Delta Rd
    – Blk 25B
    – Opp Cendex Ctr
    – Opp St. Theresa’s Convent
  • Bt Purmei Ave
    – Opp Blk 109
    – Blk 109
  • Lower Delta Rd
    – Blk 105
  • Kg Bahru Rd
    – Opp Mt Faber Lodge
  • Telok Blangah Rd
    – VivoCity NE1CC29
  • Seah Im Rd
    – HarbourFront Int NE1CC29


  • Bus Service 123M towards both Tiong Bahru Rd and Harbourfront duplicates along Bukit Purmei Ave. Check the bus destination before boarding.
    – Buses displaying the Red 123M Plate head towards Tiong Bahru Rd
    – Buses displaying the White 123M Plate head towards Harbourfront


Technical Information
Route WAB_logo_20px
HarbourFront Bus Interchange ↺ Tiong Bahru Road (Loop)
Passes Through Lower Delta Rd, Bt Purmei Ave
Route Length 10.6 km
Travelling Time 38 – 58 mins
Operator Information
BCM Route Package Bukit Merah Bus Package
Current Operator SBS Transit
Current Depot Ayer Rajah Bus Park (ARBP)
Current Fleet 12-metre Single Deck Bus:
Mercedes-Benz O530 Citaro
Scania K230UB
Departure Times from HarbourFront
0550 — 0005 (Weekdays & Satudays)
0605 — 0005 (Sundays & Public Holidays)
Frequency Loop Service
0630-0830: 10 – 14 mins
0831-1659: 10 – 20 mins
1700-1900: 12 – 15 mins
After 1900: 14 – 15 mins

Service 123M primarily serves residents along Lower Delta Road and Bukit Purmei Avenue with connections to amenities around Tiong Bahru MRT and HarbourFront MRT/Int. The route operates daily as a supplementary service of Service 123, enhancing bus connections for residents in these areas.

Formerly a weekday evening peak route between Bukit Purmei and Tiong Bahru MRT, the extended route will not only provide better access to commuters heading to Harbourfront MRT station and Tiong Bahru MRT station, but also give convenient access to amenities such as Bukit Purmei Hillock Park, Harbourfront Centre, Radin Mas Primary School and VivoCity.

This service calls at several bus stops in Bukit Purmei estate twice in different directions, i.e. towards Tiong Bahru Road and towards HarbourFront. Red and white service plates are used to distinguish the direction of travel in addition to Electronic Display Signages (EDS) on buses. Red plate indicates buses heading for Tiong Bahru Road; white plate indicates buses heading for HarbourFront.

Route Variants:

MRT Stations Served:

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


Operator History:

  • 2008 – Present: SBS Transit Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2018 under the Bukit Merah Bus Package.


  • 2008 (28 Jan): Introduced to replace Shortworking trip 123B. This route was already wheelchair-accessible (WAB) when launched.
  • 2014 (24 Aug): Extended to HarbourFront and looping at Tiong Bahru Road under LTA’s Bus Service Enhancement Programme (BSEP)
Past Routings:

External Links:


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