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.

HarbourFront Int
↺ Tiong Bahru Rd (Loop)
14009 HarbourFront Int A5 NE1CC29 Seah Im Rd
14129 Harbourfront Stn Exit A NE1CC29 Telok Blangah Rd
14119 Opp VivoCity NE1CC29 Telok Blangah Rd
14011 Bef Mt Faber Lodge Kg Bahru Rd
14021 The Pearl @ Mt Faber Lower Delta Rd
14379 Blk 40 Lower Delta Rd
14389 Opp Blk 109 Bt Purmei Ave
14381 Blk 109 Bt Purmei Ave
14031 St. Theresa's Convent Lower Delta Rd
10361 Cendex Ctr Lower Delta Rd
10371 Blk 129 Lower Delta Rd
10169 Tiong Bahru Stn EW17 Tiong Bahru Rd
10149 Blk 1 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
10379 Blk 25B Lower Delta Rd
10369 Opp Cendex Ctr Lower Delta Rd
14039 Opp St. Theresa's Convent Lower Delta Rd
14389 Opp Blk 109 Bt Purmei Ave
14381 Blk 109 Bt Purmei Ave
14029 Blk 105 Lower Delta Rd
14019 Opp Mt Faber Lodge Kg Bahru Rd
14141 HarbourFront Stn/Vivocity NE1CC29 Telok Blangah Rd
14009 HarbourFront Int NE1CC29 Seah Im Rd

  • 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
Route Overview
Route WAB_logo_20px HarbourFront Bus Interchange ↺ Tiong Bahru Road (Loop)
Passes Through Telok Blangah Rd, 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 Ltd
Current Depot Ulu Pandan Bus Depot (UPDEP)
Current Fleet Single-deck buses
Operating Hours
Departure Times from HarbourFront
Weekdays & Saturdays
Sundays / Public Holidays
05:50 – 00:05 06:05 – 00:05
Operating Frequency
Loop Service 6:30am–8.30am 8.31am–4.59pm 5.00pm–7.00pm After 7.00pm
Mondays – Thursdays 11 mins 11 – 15 mins 10 – 11 mins 13 – 14 mins
Fridays 10 – 11 mins 11 – 15 mins 10 – 11 mins 14 mins
Saturdays 13 – 14 mins 12 – 17 mins 11 – 14 mins 12 – 14 mins
Sundays / Public Holidays 13 mins 11 – 15 mins 11 – 14 mins 12 – 15 mins
Fare Information
Fare Charges regular distance fares


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 provides better access to commuters heading to Harbourfront MRT station and Tiong Bahru MRT station, as well as gives 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.

MRT Stations Served:
Route Variant:
  • Bus Service 123: Bukit Merah Bus Interchange ↔ Beach Station Bus Terminal

Gallery (Buses):
Poster Gallery:

Operator History:
  • 2008 – Present: SBS Transit Ltd

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

  • 2008 (28 Jan): Renumbered from Short Trip Service 123B as a service between Tiong Bahru Rd (Opp Tiong Bahru Plaza) and Bt Purmei Ave (Loop) during evening peak hours on weekdays
  • 2008 (14 Jul): Designated wheelchair-accessible bus service (WAB)
  • 2014 (24 Aug): Converted to a full day service, extended to HarbourFront Int and amended to loop at Tiong Bahru Road under LTA’s Bus Service Enhancement Programme (BSEP)
  • 2018 (18 Nov): Start of operations under Bukit Merah Bus Package (Tendered Contract)

Past Routings

Back to Bus Services
Back to Bus Articles


3 thoughts on “SBS Transit Bus Service 123M

Leave a Reply

Your email address will not be published. Required fields are marked *