SBS Transit Bus Service 151

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SBS Transit Bus Service 151 is a trunk service plying between Hougang Central Int and Kent Ridge Ter, passing through Hougang Avenue 5, 7 & 3, MacPherson, PIE, Whitley Bukit Timah, Clementi Road and NUS. A fast-forward route variant, Service 151e, is also operated.

Route Information
Route Hougang Central Bus Interchange  Kent Ridge Bus Terminal 
Passes Through Hougang Avenue 5, 7 and 3, MacPherson, Whitley, Bukit Timah, Clementi Road, Kent Ridge Cres
Route Length 25.5km (D1) | 25.8km (D2)
Travelling Time 85mins
Operator Information
Current Operator SBS Transit
Current Depot Hougang Bus Depot (HGDEP)
Bukit Batok Bus Depot (BBDEP)
Current Fleet Volvo B9TL
Volvo B10M Mark IV
Scania K230UB

Mercedes-Benz O530 Citaro
Departure Times from T1 0545 – 2300 (Daily)
Departure Times from T2 0615 – 2300 (Weekdays)
0630 – 2300 (Sat, Sun)
Frequency Direction 1 Direction 2
0630-0830: 06 – 10 mins
0831-1659: 06 – 16 mins
1700-1930: 08 – 09 mins
After 1930: 14 – 18 mins
0630-0830: 09 – 12 mins
0831-1659: 07 – 18 mins
1700-1930: 07 – 10 mins
After 1930: 13 – 17 mins

Route History

Service 151 serves both residential estates and many schools between Hougang Central and Kent Ridge, passing through Hougang Avenue 3, MacPherson, PIE, Bukit Timah, Clementi Road and Kent Ridge Cres. The service provides bus connections to many institutions along the Bukit Timah and Clementi Road academic belt, as well as serving within the National University of Singapore (Kent Ridge Campus).

Demand for this service is very strong during the peak hours with student demand in addition to workers commuting between Hougang and the industrial estates near Tai Seng and MacPherson Road. During offpeak hours, demand is moderate to weak. As such, the route is operated by a large split-shift fleet on regular weekdays, with reduced numbers during school holidays.

A fast-forward version of this service, 151e, is also operate during the weekday peak hours. It skips Dunearn Rd/Bukit Timah Rd (plying the PIE instead), and stops along MacPherson Rd in both directions.

Special Departures:

  • Clementi Road (Blk 352)  Hougang Central Int
    Weekdays: 0605hrs, 0615hrs

Route variants:

  • Service 151e: Hougang Central Bus Interchange ⇌ Kent Ridge Bus Terminal

Fare: Charges fares for regular trunk services. See Bus Fares for exact fares.

Fleet: Service 151′s fleet comprises of a mix of Volvo B9TL CDGEs, Volvo B10M MkIVs, Scania K230UBs and Mercedes-Benz Citaros. This service performs cross over trips to Premium 563.

Route Information:

Direction 1 Direction 2
  • Hougang Central Int
  • Hougang Ave 5
  • Hougang Ave 7
  • Tampines Rd
  • Hougang Ave 3
  • Airport Rd
  • MacPherson Rd
  • Jln Toa Payoh
  • Whitley Rd
  • Bt Timah Rd
  • Clementi Rd
  • Kent Ridge Cres
  • Kent Ridge Ter
  • Kent Ridge Ter
  • Kent Ridge Cres
  • Clementi Rd
  • Dunearn Rd
  • Whitley Rd
  • Pan-Island Expressway
  • Jln Toa Payoh
  • MacPherson Rd
  • Airport Rd
  • Hougang Ave 3
  • Tampines Rd
  • Hougang Ave 7
  • Hougang Ave 5
  • Hougang Central Int

Operator History:

  • 1993 – 2001: Singapore Bus Services Ltd
  • 2001 – Present: SBS Transit Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2016. 



  • 1993 (04 Apr): Introduced between Hougang Int and Kent Ridge Ter
  • 1994 (11 Sep): Amended to ply Kent Ridge Cres, serving NUS
  • 2004 (15 Feb): Extended to Hougang Central Int via Tampines Rd, Hougang Ave 7 and Ave 5 following the closure of Hougang South Int
  • 2010 (02 Dec): Designated wheelchair-accessible bus route (WAB)
  • 2011 (04 Sep): Skips Bendemeer Rd and Serangoon Rd due to the closure of Whampoa North.

Past Routings:

  • Refer to this article
  • 2011: Amended to present routing. No significant route changes since 2011.


External Links:

  • TransitLink E-Guide
  • SGWiki – Buses

Back to Bus Services
Back to Bus Articles


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