SBS Transit Bus Service 21

SBS Transit Bus Service 21 is a trunk service plying between Pasir Ris and St. Michael’s, passing through Tampines, Bedok Reservoir, Kaki Bukit, Geylang, Bendemeer, and Balestier.


 

Route:

Bus Service 21: Pasir Ris ↔ St. Michael’s
Direction 1
Towards St Michael’s
WHITE PLATE
Direction 2
Towards Pasir Ris
RED PLATE
  • Pasir Ris Drive 3
    – Pasir Ris Int EW1
    – Downtown East
  • Pasir Ris Dr 6
    – Blk 467
    – Blk 446
  • Pasir Ris Dr 1
    – Blk 442
    – Blk 210
    – Blk 269A
  • Loyang Ave
    – Opp Blk 149A
  • Tampines Ave 7
    – Blk 370
    – Blk 390/Opp Tampines JC
    – Opp Tampines East Stn DT33
    – Blk 230E
    – Blk 233
  • Tampines Ave 4
    – Opp Tampines Stn/Int EW2DT32
    – Opp Century Sq
  • Tampines Ave 5
    – Blk 147
  • Tampines Ave 1
    – Bef Tampines West Stn DT31
  • Bedok Reservoir Rd
    – Bedok Reform Trg Ctr
    – The Clearwater Condo
    – Waterfront Key
    – Aft Waterfront Waves
    – Waterfront Isle
    – Blk 716
    – Blk 713
    – Blk 703
    – Aft Bedok Ind Pk C
    – Blk 629
    – Blk 609
    – Blk 121
    – Opp Blk 646
  • Jln Eunos
    – Eunos Mans
    – Opp Blk 16
    – Opp Eunos Stn EW7
  • Changi Rd
    – Aft Lor 106 Changi EW7
    – Joo Chiat Cplx
  • Geylang Rd
    – Blk 14 Mkt/FC
    – City Plaza
    – Opp Lor 39 Geylang
    – Aft Lor 34 Geylang
    – Aft Lor 28 Geylang
    – Bef Lor 18 Geylang
    – Opp Mohd Salleh Mque
    – Aft Sims Way
  • Lor 1 Geylang
    – Kallang Stn/Opp Blk 2C EW10
  • Boon Keng Rd
    – Opp Kallang Pl
  • Bendemeer Rd
    – Bef Lavender St
  • Jln Besar
    – Hoa Nam Bldg
  • Kitchener Rd
    – Bef Tai Hoe Hotel
  • Serangoon Rd
    – Sri Srinivasa Perumal Tp NE8
    – Sri Vadapathira K Tp
  • Balestier Rd
    – S’pore Khalsa Assn
    – S’pore Indian Assn
  • Moulmein Rd
    – Opp Tan Tock Seng Hosp
    – St. Joseph Inst Jnr
  • Thomson Rd
    – Opp Novena Ch NS20
    – Novena Lodge
  • Balestier Rd
    – Bef Jln Dusun
    – Zhongshan Mall
    – Bef Balestier Plaza
    – Shaw Plaza
    – Opp Balestier Pt
  • Whampoa Dr
    – Blk 82
  • Jln Bahagia
    – Blk 29
  • Jln Tenteram
    – Blk 19
    – Opp Blk 65
  • Jln Bahagia (Express)
  • Kim Keat Rd (Express)
  • Whampoa Rd
    – St. Michael’s Ter
  • Whampoa Rd
    – St. Michael’s Ter

    – Blk 114
  • Jln Bahagia
    – Blk 29
  • Jln Tenteram
    – Blk 19
    – Opp Blk 65
  • Jln Bahagia (Express)
  • Kim Keat Rd
    – Opp NKF
    – Bef Kim Keat Lane
  • Balestier Rd
    – Aft Pegu Rd
    – HMI Balestier Hosp
    – Opp Public Man
    – Opp Zhongshan Mall
    – Aft Irrawaddy Rd
  • Thomson Rd
    – Opp Thomson Med Ctr
    – Opp Novena Lodge
    – Novena Stn NS20
  • Moulmein Rd
    – Revival Ctr Ch
    – Natl Skin Ctr
  • Balestier Rd
    – NorthLight Sch
  • McNair Rd
    – Blk 122
  • Towner Rd
    – Blk 107
  • Boon Keng Rd
    – Boon Keng Stn/Blk 22 NE9
    – Bef Kallang Pl
  • Lor 1 Geylang
    – Opp Kallang Stn/Blk 2C EW10
  • Sims Ave
    – Aft Lor 1 Geylang
    – Yi Xiu Fty Bldg
    – Bef Lor 23 Geylang
    – Aft Aljunied Stn EW9
    – Blk 134
    – Sims Ville
    – Aft Tg Katong Cplx EW8CC9
    – Blk 416
    – Eunos Stn/Int EW7
  • Jln Eunos
    – Eunos Stn EW7
    – Blk 17
    – Blk 322
  • Bedok Reservoir Rd
    – Blk 646
    – Blk 122
    – Blk 133
    – Blk 140
    – Aft Bedok Ind Pk C
    – Opp Blk 701
    – Blk 745
    – Opp Blk 716
    – Opp Waterfront Isle
    – Opp Waterfront Waves
    – Opp Waterfront Key
    – Opp The Clearwater Condo
    – Opp Bedok Reform Trg Ctr
  • Tampines Ave 1
    – Tampines West Stn Exit B DT31
  • Tampines Ave 5
    – Blk 938
  • Tampines Ave 4
    – UOB Tampines Ctr
    – Tampines Stn/Int EW2DT32
  • Tampines Ave 7
    – Blk 423
    – Blk 449
    – Tampines East Stn Exit A DT33
    – Tampines JC/Opp Blk 390
    – Blk 497D
  • Loyang Ave
    – Blk 149A
  • Pasir Ris Dr 1
    – Blk 156
    – Blk 197
    – Blk 104
  • Pasir Ris Dr 6
    – Blk 429
    – Blk 405
  • Pasir Ris Dr 3
    – Opp Downtown East
    – Pasir Ris Int EW1

Note:

  • Commuters along Jalan Bahagia & Jalan Tenteram should check the bus destination and service number plate displayed on the front of the bus as buses from both directions will call at the same stops.
    RED plated Service 21 buses are bound for Pasir Ris, while
    WHITE plated Service 21 buses are bound for St. Michael’s.
Technical Information
Route WAB_logo_20px
Pasir Ris Bus Interchange ↔ St. Michael’s Bus Terminal
Passes Through Tampines, Bedok Reservoir, Kaki Bukit, Geylang, Bendemeer, Moulmein, Balestier
Route Length 27.4 km (D1) | 25.1 km (D2)
Traveling Time 130 mins
Operator Information
BCM Route Package Bishan – Toa Payoh Bus Package
Current Operator SBS Transit Ltd
Current Depot Ang Mo Kio Bus Depot (AMDEP)
Bedok North Bus Depot (BNDEP)
Current Fleet 12-metre Double Deck Bus:
Volvo B9TL
12-metre Single Deck Bus:
Mercedes-Benz O530 Citaro
Scania K230UB
Departure Times from Pasir Ris
0530hrs – 0000hrs (Daily)
Departure Times from St. Michael’s
0530hrs – 0000hrs (Daily)
Frequency Direction 1 Direction 2
0630-0830: 07 – 12 mins
0831-1659: 08 – 15 mins
1700-1900: 11 – 14 mins
After 1900: 12 – 14 mins
0630-0830: 09 – 11 mins
0831-1659: 08 – 14 mins
1700-1900: 09 – 14 mins
After 1900: 12 – 15 mins

Route History

Service 21 spans from Central to East, serving many residential areas throughout its route, such as Whampoa, Balestier, Boon Keng, Kallang, Paya Lebar, Eunos, Kaki Bukit, Bedok Reservoir, Tampines and Pasir Ris. Its lengthy route and large coverage makes it an important inter-town route, and as a result, journey time is relatively long for its length.

Introduced in 1992, the route originally ran between Pasir Ris Int and Lorong 1 Geylang Ter before being extended to St. Michael’s in 1993 following the merger with then-Service 4. Service 21 made history on 26 June 2006 as the first wheelchair-accessible bus service in Singapore following the debut of Volvo B9TL CDGEs on the route.

The route has several key sectors offering important connections, such as that between St. Michael’s Estate and Novena MRT, Farrer Park and the Geylang district, as well as that between Eunos MRT and Bedok Reservoir Road. As such, in addition to demand from inter-town connections, the route experiences high demand throughout the day, and relies on  fleet comprising mostly of double-decker buses.

Around Farrer Park, the route plies very different stretches in either direction. Commuters are advised to be aware of the bus stops served.

Service 21 is a wheelchair-accessible bus route (WAB) since 26 Jun 2006. It received additional buses under the Bus Service Enhancement Programme (BSEP) progressively from 2013 onwards.

Route Amendment to Jalan Tenteram

Main article: Route Amendment of Bus 21 to Jalan Tenteram

From 24 April 2016, Bus Service 21 was amended to ply Jalan Tenteram on both directions, skipping Bus Stop 52109 – Bet Blks 33/34 along Jalan Bahagia. Commuters at Jalan Tenteram should check the colour of the plates displayed on the front of the bus before boarding the bus. Affected commuters who rely on Bus Service 21 to Novena MRT Station from Bus Stop 52109 can take Bus Service 131 instead.

MRT Stations Served:

Special Departures:

  • Changi Road (Aft Lor 106 Changi)  St. Michaels’s Ter
    Weekdays: 0555hrs, 0610hrs
    Saturdays: 0555hrs, 0606hrs
    Sundays: 0555hrs
  • Sims Ave (Eunos Stn) Pasir Ris Int
    Weekdays: 0550hrs, 0600hrs

Shortworking Trips:

  • Service 21A:
    Geylang Road (Bef Lor 18 Geylang) → Kitchener Road (Bef Tai Hoe Hotel)

    Sundays & Public Holidays, 1730hrs – 1830hrs

Service 21A caters to high weekend demand from migrant workers commuting from the Geylang area to Kitchener Road near Little India.

Fare: Charges basic distance fares. See Bus Fares. Calculate your bus fare using LTA’s fare calculator on MyTransport.sg here.


Gallery:

 


Operator History:

  • 1992 – 2001: Singapore Bus Services Ltd
  • 2001 – Present: SBS Transit Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2026 under the Bishan – Toa Payoh Bus Package.

History:

  • 1992: Introduced between Pasir Ris Int and Geylang Lor 1 Ter.
  • 1993: Merged with service 4, extended to St Michael’s Terminal.
  • 2003 (21 Jun): Amended to ply Jln Besar, Kitchener Rd and Serangoon Rd as part of NEL rationalisation (Phase 1)
  • 2006 (26 Jun): Designated wheelchair-accessible bus route (WAB), the first WAB route in Singapore
  • 2013: Service improvement under the Bus Service Enhancement Programme (BSEP)
  • 2014 (25 May): Shortworking trip 21A introduced
  • 2016 (24 Apr): Amended to ply Jalan Tenteram for both directions of the route.

Past Routings:


External Links:

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