SBS Transit Bus Service 4 is a trunk loop service between Tampines Bus Interchange and Changi North Way, passing through Flora Road and Changi North Industrial Estate. The route commenced operations on 17 March 2013 as the 7th bus service under the Bus Service Enhancement Programme (BSEP).
Service 4 serves a new pair of bus stops outside & opp Estella Gardens from 23 Feb 2025.
↺ Changi Nth Way (Loop)
- – Wheelchair Inaccessible Bus Stop (97141)
| Route Overview | ||||||||||||
Route  |
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 |
Daily | |||||||||||
| 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 | 11 – 12 mins | 13 – 15 mins | ||||||||
| Sundays / Public Holidays | 13 – 14 mins | 11 – 13 mins | 13 mins | 12 – 13 mins | ||||||||
| Fare Information |
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| Fare | Charges regular distance fares |
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Bus Service 4 improves connectivity for commuters travelling between Tampines, the Flora Road residential area, and the Changi North Industrial Estate, as well as its surrounding areas. It offers enhanced access to key transport hubs such as Tampines Bus Interchange and Tampines MRT, allowing passengers to transfer seamlessly to other bus services or rail lines for their onward journeys. The service also strengthens connections between these areas and amenities within Tampines Town.
Introduced on 17 March 2013 under the Bus Service Enhancement Programme (BSEP), Service 4 has been particularly beneficial for residents of Flora Road, who previously relied on a shuttle service operated by ComfortDelGro at a flat fare of $1.30 to reach Tampines. Additionally, Bus Service 4 alleviates peak-hour congestion on Service 37 by serving Changi North Street 1 within the Changi North Industrial Estate, while also providing bus connectivity to industries along Changi North Way, which did not have a public bus service previously.
To accommodate high demand, double-deck buses were introduced on Bus Service 4 from 17 Aug 2015.
MRT Stations Served:
- EW2–DT32 Tampines
- DT33 Tampines East
Special Departures:
- Changi North Way (Bef Changi Prison Cplx) → Tampines Int
Weekdays: 05:50 & 06:06
Saturdays & Sundays / Public Holidays: 05:50 & 06:05
Gallery
Poster Gallery
Operator History
- 2013 – Present: SBS Transit Ltd
History
- 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)
- 2025 (23 Feb): Serves a new pair of bus stops outside and opp Estella Gdns along Flora Rd
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Now svc 4 got random SD.. Suspect fleet add.
There is a Super high Demand on this Bus Service so the fleet has NO Single-Deckers.
There are still single deckers for this service but it’s very rare to see it
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.
Amend, not extend
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.
Like that, also can transfer 29, 59 and 109 (which are in different bus packages)
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.
Actually, the extension to St Michael’s was in the late 80s and the extension to Tampines was in the early 90s.
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.