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 Coastal Drive, via Marina Boulevard, Marina Gardens Drive and Central Boulevard. It is a vital bus service link between Marina Barrage and Marina Bay MRT Station.

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Service 400 serves a new bus stop along Marina Gardens Drive from 24 Oct 2021.

Shenton Way Ter
↺ Marina Coastal Dr (Loop)
03239 Shenton Way Ter Shenton Way
03223 Tanjong Pagar Stn Exit C EW15 Anson Rd
03151 Opp GB Bldg Cecil St
03381 The Sail Marina Blvd
03391 Marina Bay Financial Ctr NS27CE2 Marina Blvd
03331 Bef Marina Gdns Dr Marina Blvd
03341 Bef Gdns by the Bay Marina Gdns Dr
03371 Gdns by the Bay Marina Gdns Dr
03369 Marina Barrage Marina Gdns Dr
03361 Opp Marina Barrage Marina Gdns Dr
03349 Aft Gdns by the Bay Marina Gdns Dr
03419 Marina Sth Pier Stn NS28 Marina Coastal Dr
03421 Marina Bay Cruise Ctr Marina Coastal Dr
03411 Opp Marina Sth Pier Stn NS28 Marina Coastal Dr
03339 Aft Marina Gdns Dr Central Blvd
03539 Marina Bay Stn NS27CE2 Central Blvd
03529 Downtown Stn DT17 Central Blvd
03129 UIC Bldg Shenton Way
03218 Opp MAS Bldg EW15 Shenton Way
03239 Shenton Way Ter Shenton Way


  • No alighting at Shenton Way Bus Terminal
Route Overview
Route WAB_logo_20px Shenton Way Bus Terminal ↺ Marina Coastal Drive (Loop)
Passes Through Marina Blvd, Marina Gardens Dr, Central Blvd
Route Length 11.3 km
Travelling Time 33 – 52 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 Bus:
Mercedes-Benz Citaro
Scania K230UB
(Weekends & Public Holidays only)
12-metre Double Deck Bus:
Volvo B9TL
Operating Hours
Departure Times from Shenton Way
06:00 – 23:40
Operating Frequency
Loop Service 6:30am–8.30am 8.31am–4.59pm 5.00pm–7.00pm After 7.00pm
Weekdays 30 mins 30 mins 20 30 mins 30 mins
Saturdays 30 mins 30 mins 20 30 mins 30 mins
Sundays / Public Holidays 30 mins 30 mins 20 30 mins 30 mins
Fare Information
Fare Charges regular distance fares


Service 400 serves the Marina South and Marina Coastal area with connections to Marina Bay MRT, Downtown 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. Between 2005 and 2009, it was designated as a Parks Service, serving the former Marina City Park and Marina Padang.

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 Marina Barrage and Gardens by the Bay (Bay South).

With the End of the On-Demand Public Bus trial, Service 400 was extended to serve Marina South Pier & Marina Bay Cruise Centre along Marina Coastal Drive, merging with Service 402 from 16 June 2019. The operating hours and frequency for Service 400 were also revised.

On-Demand Public Bus (ODPB) Trial

To facilitate the ODPB Trial from 17 December 2018 to 14 June 2019, Service 400 operated 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:

Poster Gallery:


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 between Shenton Way Ter and Marina Mall (Loop)
  • 2000: Serves new bus stop after Shenton Way along Palmer Rd
  • 2005 (14 Nov): Designated as a Parks Service
  • 2008 (07 Jan): Amended to skip the western loop of Marina Mall, Marina Way and Marina Grove
  • 2008 (19 Oct): Amended to loop at Marina Mall, skipping the eastern loop of Marina Way and Marina Grove
  • 2009 (18 Jan): Serves relocated bus stop outside Marina Bay Stn along Marina Station Rd with the partial closure of Marina St to facilitate the construction of the Downtown MRT Line
  • 2009 (16 Mar): Reverted back to a trunk service
  • 2009 (19 Jul): Extended to loop at Marina Gardens Dr
  • 2011 (27 Jun): Designated wheelchair-accessible bus route (WAB)
  • 2012 (14 Jan): Serves reinstated bus stop outside Marina Bay Stn along Marina St
  • 2012 (24 Jun): Amended to ply the extended Marina Gardens Dr with the permanent closure of Marina Mall
  • 2013 (29 Dec): Amended to ply Marina Blvd/Central Blvd, Marina St, Central Blvd and Shenton Way with the opening of MCE
  • 2014 (28 Sep): Amended to ply Cecil St and Marina Blvd with the road changes in Marina South area, skipping Maxwell Rd and Central Blvd
  • 2017 (25 Jun): Amended to the relocated Shenton Way Bus Terminal
  • 2018 (18 Nov): Start of operations under Bukit Merah Bus Package (Tendered Contract)
  • 2019 (16 Jun): Integrated with Service 402 and extended to loop at Marina Coastal Dr
  • 2021 (24 Oct): Serves new bus stop opposite Marina Barrage along Marina Gardens Dr

Past Routings

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11 thoughts on “SBS Transit Bus Service 400

  • 29 July 2019 at 4:25 PM

    Is wheelchair accessible

  • 19 June 2019 at 1:18 PM

    Service 400 must have a ten minute frequency

    • 20 April 2021 at 7:38 PM

      Nah, the MRT parallels various parts of its route

  • 19 June 2019 at 12:30 PM

    service 400 should called at the bus stops in gardens by the bay and marina barrage in both direction towards Shenton Way bus ter and Marina South Pier.

    • 19 June 2019 at 3:59 PM

      It only calls once

  • 18 June 2019 at 1:46 PM

    The frequency the bus can be 6 to 10 minutes because of peak and Saturday ,Sunday and public holiday

  • 17 June 2019 at 4:16 PM

    Service 400 could be the first feeder service in the city or not…

    • 19 June 2019 at 4:01 PM

      Cannot. Is a regular bus service


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