SBS Transit Bus Service 4

SBS Transit Bus Service 4 is a trunk route running between Tampines Bus Interchange and Changi North Way, passing through Flora Road and Changi North Industrial Estate. Bus Service 4 commenced operations on 17 March 2013 as the 7th bus service under the Bus Service Enhancement Programme (BSEP).

Tampines Int
↺ Changi Nth Way (Loop)
75009 Tampines Int B10 EW2-DT32 Tampines Ctrl 1
76191 Blk 401 Tampines Ave 7
76201 Blk 423 Tampines Ave 7
76211 Blk 449 Tampines Ave 7
76221 Tampines East Stn Exit A DT33 Tampines Ave 7
76231 Opp Blk 390 Tampines Ave 7
76241 Blk 497D Tampines Ave 7
98301 Avila Gdns Flora Rd
98311 Bef Mariam Wk Mariam Way
97049 Changi Prison Upp Changi Rd Nth
97039 Bef Jln Bena Upp Changi Rd Nth
97141 Aft Upp Changi Rd Nth Changi Nth St 1
97301 Aft Changi Nth St 1 Changi Nth Way
97311 Zuellig Pharma Changi Nth Way
97331 Bef Changi Prison Cplx Changi Nth Way
97321 Aft Compass Green Tanah Merah Besar Rd
97059 Changi Women's Prison Upp Changi Rd Nth
98319 Aft Ballota Pk Mariam Way
98309 Carissa Pk Flora Rd
76249 Blk 370 Tampines Ave 7
76239 Blk 390 Tampines Ave 7
76229 Opp Tampines East Stn DT33 Tampines Ave 7
76219 Blk 230E Tampines Ave 7
76209 Blk 233 Tampines Ave 7
76199 Blk 503 Tampines Ave 7
75009 Tampines Int EW2-DT32 Tampines Ctrl 1

  • – Wheelchair Inaccessible Bus Stop (97141)
Route Overview
Route WAB_logo_20px Tampines Bus Interchange ↺ Changi North Way (Loop)
Passes Through Tampines Ave 7, Flora Rd, Tanah Merah Besar Rd
Route Length 10.5 km
Travelling Time 55 mins
Operator Information
BCM Route Package Tampines Bus Package
Current Operator SBS Transit Ltd
Current Depot Bedok North Bus Depot (BNDEP)
Current Fleet Single-deck & Double-deck buses
Operating Hours
Departure Times from Tampines
06:00 – 23:30
Operating Frequency
Loop Service 6:30am–8.30am 8.31am–4.59pm 5.00pm–7.00pm After 7.00pm
Weekdays 10 – 11 mins 10 – 14 mins 11 – 13 mins 11 – 13 mins
Saturdays 12 – 13 mins 11 – 13 mins 12 – 13 mins 12 – 17 mins
Sundays / Public Holidays 12 – 15 mins 11 – 13 mins 13 mins 12 – 13 mins
Fare Information
Fare Charges regular distance fares


Bus Service 4 provides better connectivity for commuters travelling between Tampines and the Changi North Industrial Estate and its surrounding areas. It enhances connectivity for commuters travelling between Tampines, Flora Road and Changi North Industrial Estate as well as its surrounding areas.

The bus service serves eight new bus stops in Flora Road and Changi North Industrial Estate. It also enhances the connectivity to key transport nodes at Tampines Bus Interchange and MRT, where they can transfer to other bus services or rail lines to reach their destination. In addition, Bus Service 4 improves connection of these areas to amenities within Tampines Town.

Service 4 receives considerable demand from Flora Road, where residents previously heading to Tampines had to rely on a shuttle bus run by ComfortDelGro charging a flat fare of $1.30. In addition, this route helps disperse Service 37’s high peak demand for workers at Changi North Industrial Estate, as well as providing new bus connectivity for industries along Changi North Way.

Double-deck buses were deployed on this service from 17 Aug 2015.

MRT Stations Served:
Special Departures:
  • Changi North Way (Bef Changi Prison Cplx) → Tampines Int
    Daily: 05:50 & 06:05


Operator History
  • 2013 – Present: SBS Transit Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2024 under the Tampines Bus Package.

  • 2013 (17 Mar): Introduced as a loop service from Tampines to Changi North Way under LTA’s Bus Service Enhancement Programme (BSEP)
  • 2013 (31 Mar): Designated wheelchair-accessible bus service (WAB)

Past Routings

Back to Bus Services
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7 thoughts on “SBS Transit Bus Service 4

  • 2 December 2023 at 12:51 PM

    SBS Transit can extend this bus route to cross Japanese school and salvation army and go to Changi airport via the expressway. However, this service will need to stop double decker bus operations if SBST wants to amend this route to Changi airport due to height limits.

    • 6 December 2023 at 4:09 PM

      Amend, not extend

  • 26 November 2018 at 8:05 PM

    Actually, Service 4 can also be operated by Go-ahead Singapore like Service 3 which is also from Tampines (even though the reason is because of Punggol) but it loops at a place that is near Changi Village and Service 2 is operated by Go-ahead Singapore.

    • 4 March 2021 at 4:33 PM

      Like that, also can transfer 29, 59 and 109 (which are in different bus packages)

  • 12 March 2017 at 10:20 PM

    Number 4 used to ply Bedok to Moulmein Road (loop) then Bedok to St Michael’s in the 70s – 80s.
    At one point, it was extended to Tampines Interchange before it was withdrawn.

    • 26 May 2019 at 9:04 PM

      Actually, the extension to St Michael’s was in the late 80s and the extension to Tampines was in the early 90s.

      • 6 March 2024 at 6:43 AM

        The then-Service 4 was extended to Pasir Ris for more than two years, between 1990 – 1992. Then, TransitLink “itchy hand”, cut it short to Tampines for a few months, then completely withdraw it in 1993 and changed the route number to 21. The changes were really unnecessary.


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