SBS Transit Bus Service 91

SBS Transit Bus Service 91 is a trunk route from Buona Vista and looping at Ayer Rajah Crescent, passing through Holland Drive and North Buona Vista Road. It has two looping points, both along Ayer Rajah Crescent.

Buona Vista Ter
↺ Ayer Rajah Cres (Loop)
11379 Buona Vista Ter Nth Buona Vista Rd
11381 Blk 10A Holland Dr
11181 Opp Blk 43 C'wealth Ave
11369 Buona Vista Stn Exit D EW21CC22 Nth Buona Vista Rd
18149 Essec Business Sch Nth Buona Vista Rd
18051 one-North Stn CC23 Ayer Rajah Ave
18021 Opp Tempco Mfg Ayer Rajah Cres
18029 Tempco Mfg Ayer Rajah Cres
18069 Opp Blk 71 Ayer Rajah Cres
18089 S'pore Post Ayer Rajah Cres
18099 Bef Ayer Rajah Cres Ayer Rajah Cres
18081 Blk 55 Ayer Rajah Cres
18061 Blk 71 Ayer Rajah Cres
18059 Opp one-North Stn CC23 Ayer Rajah Ave
18141 Aft Anglo-Chinese JC Nth Buona Vista Rd
11361 Buona Vista Stn Exit C EW21CC22 Nth Buona Vista Rd
11189 Blk 43 C'wealth Ave
11389 Buona Vista CC Holland Dr

  • No Boarding & Alighting at Buona Vista Terminal
Route Overview
Route WAB_logo_20px Buona Vista Bus Terminal ↺ Ayer Rajah Crescent (Loop)
Passes Through Holland Dr, Ayer Rajah Ave
Route Length 6.8 km
Travelling Time 35 mins
Operator Information
BCM Route Package Clementi Bus Package
Current Operator SBS Transit Ltd
Current Depot Bukit Batok Bus Depot (BBDEP)
Current Fleet Single Deck Bus:
Mercedes-Benz Citaro
Double Deck Bus:
Volvo B9TL
Operating Hours
Departure Times from Buona Vista Weekdays Saturdays Sundays / Public Holidays
06:30 – 20:00 06:30 – 18:00 No Operation
Operating Frequency
Loop Service 6.30am–8.30am 8.31am–4.59pm 5.00pm–7.00pm After 7.00pm
Weekdays 8 – 15 mins 8 – 19 mins 10 – 12 mins 10 – 11 mins
Saturdays 14 – 19 mins 12 – 19 mins 19 mins N.A.
Fare Information
Fare Charges regular distance fares


Service 91 serves the Ayer Rajah Industrial Estate with bus connections to one-north and Buona Vista MRT stations.

This service has a unique portion of route which enters the compound of Ayer Rajah Bus Park to turn around at Ayer Rajah Cres before its closure in September 2018. After the closure of Ayer Rajah Bus Park, part of the compound was retained to facilitate u-turns for Service 91.

During morning peak hours, a Double Decker bus interlines to this service from Service 74 to supplement demand. This service does not operate on Sundays and Public Holidays.

MRT Stations Served


Operator History
  • 1995 – 2001: Singapore Bus Services Ltd
  • 2001 – Present: SBS Transit Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2025 under the Clementi Bus Package.

  • 1995 (13 Feb): Introduced between Buona Vista Ter and Ayer Rajah Cres (Loop), operating on weekdays and Saturdays only
  • 2006: Serves merged bus stop opposite Buona Vista Stn along North Buona Vista Rd with the closure of the staggered bus stop
  • 2012 (09 Apr): Skips abolished bus stop outside Basement Food Court along Ayer Rajah Cres
  • 2014 (03 Dec): Designated wheelchair-accessible bus route (WAB)

Past Routings

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