SBS Transit Bus Service 400

SBS Transit Bus Service 400 is a trunk route serving the Marina Bay area, running from Shenton Way Terminal and looping at Marina Gardens Drive, via Marina Blvd. It is a vital bus service link between Marina Bay MRT Station and Marina Barrage.

Service 400 operates at a reduced frequency of 40 minutes per bus during Weekday off-peak hours, as part of the On-Demand Public Bus trial.

Shenton Way Ter ↺ Marina Gdns Dr (Loop)
Shenton Way Ter
Shenton Way
Tanjong Pagar Stn Exit C
Anson Rd
Opp GB Bldg
Cecil St
The Sail
Marina Blvd
Marina Bay Financial Ctr
Marina Blvd
Bef Marina Gdns Dr
Marina Blvd
Bef Gdns by the Bay
Marina Gdns Dr
Gdns by the Bay
Marina Gdns Dr
Marina Barrage
Marina Gdns Dr
Aft Gdns by the Bay
Marina Gdns Dr
Aft Marina Gdns Dr
Central Blvd
Marina Bay Stn
Central Blvd
Downtown Stn
Central Blvd
UIC Bldg
Shenton Way
Opp MAS Bldg
Shenton Way
Shenton Way Ter
Shenton Way


  • No alighting at Shenton Way Bus Terminal
Technical Information
Route WAB_logo_20px
Shenton Way Bus Terminal ↺ Marina Gardens Drive (Loop)
Passes Through Cecil Street, Marina Blvd, Central Blvd
Route Length 8.1 km
Travelling Time 30 mins
Operator Information
BCM Route Package Bukit Merah Bus Package
Current Operator SBS Transit Ltd
Current Depot Ulu Pandan Bus Depot (UPDEP)
Current Fleet 12-metre Single Deck Buses:
Mercedes-Benz O530 Citaro
Scania K230UB
Departure Times from Shenton Way
0700 – 2330 (Daily)
Frequency Loop Service
0630 – 0830: 15 mins
0831 – 1659: 18 – 40 mins*
1700 – 1900: 14 – 15 mins
After 1900: 19 – 40 mins*
* Lower frequency during On-Demand Public Bus Trial periods

Service 400 serves the Marina South area with connections to Marina Bay MRT and Shenton Way. Before the mass redevelopment of Marina South, much of the area was a park and Service 400 provided the bus connections needed. In recent years, the construction of the Circle Line Extension and Downtown Line have diminished the role of Service 400 as a crucial connecting route in the Marina South area; however it still receives demand from shuttling passengers between Tanjong Pagar, Downtown and Marina Bay MRT stations to the Marina Barrage and Gardens by the Bay (Bay South).

Formerly designated as a Parks service in 2005 (serving Marina City Park and Marina Padang), it was reverted back to a normal trunk route in 2009.

During festive occasions like National Day and New Year’s Eve, the Marina South area is a popular place for fireworks viewing and celebrations. Buses will be added to cope with the large increase in passenger demand.

On-Demand Public Bus (ODPB) Trial

To facilitate the ODPB Trial from 17 December 2018 to 14 June 2019, Service 400 operates at a frequency of 40 minutes during off peak hours on Weekdays (Except Public Holidays). Commuters may book an On-Demand Public Bus (On-Demand Public Bus – Marina – Downtown Area) through the BusNow app.

ODPB Trial Hours – Marina – Downtown Area

  • Weekdays from 17 Dec 2018 to 14 Jun 2019:
    1100hrs – 1500hrs & 2030hrs – 2345hrs

Departure Timings of Service 400 during ODPB trial hours

  • From Shenton Way Bus Terminal, Weekdays (Except Public Holidays) during the On-Demand Public Bus Trial:
    1100hrs, 1140hrs, 1220hrs, 1300hrs, 1340hrs, 1420hrs, 1500hrs,
    2010hrs, 2050hrs, 2130hrs, 2210hrs, 2250hrs, 2330hrs

MRT Stations Served:

Fare: Charges basic distance fares. See Bus Fares.



Operator History:

  • 1989 – 2001: Singapore Bus Services Ltd
  • 2001 – Present: SBS Transit Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2023 under the Bukit Merah Bus Package

Route history:

  • 1989 (30 Jul): Introduced as Shenton Way – Marina Mall (Loop), operating on Sundays and Public Holidays from 1400hrs-2300hrs.
  • 2005 (14 Nov): Designated as Parks Services
  • 2009 (15 Mar): Reverted back to trunk service.
  • 2009 (19 Jul): Amended to Marina Gardens Dr (Marina Barrage), no longer serves Marina Grove, Marina Place & Marina Way.
  • 2011 (27 Jun): Designated wheelchair-accessible bus route (WAB)
  • 2012 (24 Jun): Amended to serve the new Marina Gardens Dr (along Gardens by the Bay) instead of Marina Mall.
  • 2013 (29 Dec): Post-MCE route amendments to ply:
    • Forward journey via Marina Stn Rd, Central Blvd, Marina Way, Marina Blvd, Marina Gdns Dr
    • Return journey via Central Blvd, Marina St, Marina Stn Rd, Central Blvd and Shenton Way
    • Existing bus stops along Marina Pl, Marina St and Marina Stn Rd abolished
    • Calls at new bus stops along its new route
  • 2014 (28 Sep): Route Amendments in Marina South Area: [Link
    • Forward journey towards Marina Barrage amended to Cecil St & Marina Blvd, omitting Maxwell Rd and calling at 4 additional bus stops
    • Return journey via Central Blvd, new stop outside Marina Bay Stn. Existing stop along Marina St abolished.
    • Skips 03222 Hub Synergy Pt along Anson Rd, and serves 03223 Intl Plaza instead
  • 2017 (25 Jun): Amended to relocated Shenton Way Bus Terminal.
  • 2018 (18 Nov): Start of operations under Bukit Merah Bus Package (Tendered Contract)

Past Routings:

Ding Dong Bell

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