SMRT Bus Service 171

SMRT Bus Service 171 is a trunk route linking Yishun and Marina Centre, passing through Mandai Road, BKE, Bukit Panjang, Upper Bukit Timah, Bukit Timah, Scotts Road, Orchard, Dhoby Ghaut and Bras Basah. It shares the Yishun – Marina Centre connection with Service 857, but plies a much longer route to serve more areas.

Bus Service 171 will call at a pair of bus stops along Jelebu Rd from 25 Feb 2018.



Bus Service 171: Yishun ↔ Marina Centre
Direction 1
From Yishun
 Direction 2
From Marina Centre
  • Yishun Ctrl
    – Yishun Temp Int NS13
  • Yishun Ave 5
    – Blk 741
    – Blk 701
  • Sembawang Rd
    – Blk 713
    – Khatib Camp
    – Opp Dieppe Barracks
    – Opp Sembawang Air Base
  • Mandai Ave
    – Mandai Crematorium & Columbarium
  • Mandai Rd
    – Aft Mandai Ave
    – Opp Mandai Agrotech Pk
    – Bef Jln Ulu Sembawang
    – LP 159
    – Bef Mandai Lake Rd
    – Mandai Camp 2
  • BKE (Express)
  • Bt Panjang Rd
    – Blk 223
  • Pending Rd
    – Bef Pending Stn BP8
  • Petir Rd
    – Bet Blks 139/140
    – Opp Petir Stn BP7
  • Jelebu Rd
    – Opp Blk 180
  • Bt Panjang Rd
    – Blk 184 DT1BP6
  • Upp Bt Timah Rd
    – Bt Panjang Stn Exit A/LRT DT1BP6
    – The Linear
    – Bef Hazel Pk Terr
    – Cashew Stn DT2
    – Assumption Pathway Sch
    – Aft Assumption Eng Sch
    – Hillview Stn Exit A DT3
    – The Rail Mall
    – Opp Hume Pk Condo
    – Opp The Hillside
    – Aft Bt Timah Fire Stn
    – Southaven II
  • Jln Anak Bt
    – Opp Beauty World Ctr DT5
    – Opp Bt Timah Plaza
  • Dunearn Rd
    – Opp King Albert Pk Stn DT6
    – Hua Guan Gdn
    – Opp The Nexus
    – Aft Swiss Club Rd
    – Opp Sixth Ave Stn DT7
    – Aft Jln Naga Sari
    – Natl JC
    – Opp Tan Kah Kee Stn DT8
    – Opp Coronation Plaza
    – Opp Botanic Gdns Stn CC19DT9
    – Aft Kheam Hock Rd
    – Aft Dunkirk Ave
    – Opp Stevens Stn DT10
    – Chinese Intl Sch
    – Bef Goldhill Ave
    – Anglo-Chinese Sch
    – Chancery Ct
    – Opp Newton Stn Exit C NS21DT11
  • Scotts Rd
    – Newton Stn Exit B NS21DT11
    – Env Bldg
    – Far East Plaza
  • Orchard Rd
    – Orchard Stn/Tang Plaza NS22
    – Opp Mandarin Orchard NS23
    – Concorde Hotel S’pore
    – Dhoby Ghaut Stn NS24NE6CC1
  • Bras Basah Rd
    – Bencoolen Stn Exit B  DT21
    – Aft Bras Basah Stn Exit A CC2
    – Raffles Hotel EW13NS25 CC3
  • Raffles Blvd
    – Pan Pacific Hotel CC4DT15
    – Marina Ctr Ter
  • Raffles Blvd
    – Marina Ctr Ter
  • Raffles Ave
    – Aft S’pore Flyer
    – Seating Gallery
    – The Esplanade
  • Stamford Rd
    – Capitol Bldg EW13NS25
    – SMU CC2
  • Orchard Rd
    – YMCA
  • Penang Rd
    – Dhoby Ghaut Stn NS24NE6CC1
    – Winsland Hse
  • Somerset Rd
    – Somerset Stn NS23
  • Grange Rd (Express)
  • Orchard Link (Express)
  • Orchard Turn
    – Opp Ngee Ann City
    – Opp Orchard Stn/ION NS22
  • Scotts Rd
    – Royal Plaza On Scotts
    – Opp Env Bldg
    – Newton Stn Exit A NS21DT11
  • Bt Timah Rd
    – Newton Stn Exit C NS21DT11
    – Balmoral Plaza
    – City Twrs
    – Leng Kwang Baptist Ch
    – Stevens Stn DT10
    – Bef Lewis Rd
    – NUS Bt Timah Campus
    – Botanic Gdns Stn CC19DT9
    – Bef Crown Ctr
    – Coronation Plaza
    – Tan Kah Kee Stn DT8
    – Chinese High Sch
    – Opp Natl JC
    – Sixth Ave Stn DT6
    – Sixth Ave Ctr
    – Aft Maple Ave
    – The Tessarina
    – The Nexus
    – King Albert Pk Stn DT6
    – King Albert Pk
  • Upp Bt Timah Rd
    – Pei Hwa Presby Pr Sch
    – Beauty World Stn Exit B DT5
    – Woh Hup Bldg
    – Bt Regency
    – Aft Old Jurong Rd
    – Hume Pk Condo
    – Opp The Rail Mall
    – Hillview Stn DT3
    – Opp Dairy Farm Rd
    – Opp Assumption Eng Sch
    – Bef Cashew Stn DT2
    – Min of Defence
    – Opp The Linear
    – Bt Panjang Stn Exit B DT1BP6
  • Bt Panjang Rd
    – Blk 604 DT1BP6
  • Jelebu Rd
    – Blk 180
  • Petir Rd
    – Aft Petir Stn BP7
    – Blk 127
  • Pending Rd
    – Opp Pending Stn BP8
  • Bt Panjang Rd
    – Blk 270
  • BKE (Express)
  • Mandai Rd
    – Opp Mandai Camp 2
    – Aft Mandai Lake Rd
    – LP 162
    – Aft Jln Ulu Sembawang
    – Mandai Agrotech Pk
    – Bef Mandai Ave
  • Mandai Ave
    – Opp Mandai Crematorium & Columbarium
  • Sembawang Rd
    – Aft Sembawang Air Base
    – Dieppe Barracks
    – Opp Khatib Camp
    – Opp Blk 713
  • Yishun Ave 5
    – Opp Blk 701A
    – Blk 145
    – Blk 151
  • Yishun Ctrl
    – Yishun Temp Int NS13


  • No boarding and alighting at Marina Centre Terminal.
Technical Information
Route WAB_logo_20px
Yishun Temporary Interchange Marina Centre Bus Terminal
Passes Through Mandai Rd, BKE, Bukit Panjang, Upp Bukit Timah, Bukit Timah, Orchard, Bras Basah
Route Length 34.2 km (D1) | 34.6 km (D2)
Travelling Time 110 mins
Operator Information
BCM Route Package Sembawang – Yishun Bus Package
Current Operator SMRT Buses Ltd
Current Depot Ang Mo Kio Bus Depot (AMDEP)
Current Fleet 12-metre Single Deck Bus:
– MAN NL323F
Departure Times from Yishun
0530 – 2330 (Daily)
Departure Times from Marina Centre
0545 – 2330 (Daily)
Frequency Direction 1
Direction 2
0630 – 0830: 10 – 12 mins
0831 – 1659: 09 – 13 mins
1700 – 1900: 11 – 14 mins
After 1900: 11 – 14 mins
0630 – 0830: 11 mins
0831 – 1659: 11 – 12 mins
1700 – 1900: 11 mins
After 1900: 11 – 15 mins

Route History

Service 171 is an inter-town route serving between the areas of Yishun, Bukit Panjang, Upper Bukit Timah, Bukit Timah, Newton, Orchard Road, Bras Basah and Marina Centre. It is a key inter-town connection between the towns of Yishun and Bukit Panjang, via BKE and Mandai Road, with no other public bus route offering a faster route. It was also well-patronized between the Orchard area and Bukit Timah with few duplicating routes before the Downtown Line Stage 2 opened.

In addition, the service provides bus connections to many institutions along the Dunearn Road / Bukit Timah Road academic belt. A large portion of its route runs parallel to Service 67 and 170 (between Newton and Bukit Panjang), as well as the Downtown Line Stage 2. Demand is moderate throughout the day but high during peak hours (especially between Bukit Timah and the City.) and during school dismissal hours. High capacity bendy buses are deployed occasionally, especially during special occasions such as route diversions and festive seasons.

This service plies a short express sector on the Bukit Timah Expressway (BKE), between Mandai Road and Bukit Panjang Road. Despite sharing the Yishun – Marina Centre connection with Service 857, it plies a much longer route, serving Bukit Panjang and (almost) the full stretch of Upper Bukit Timah & Bukit Timah Road.

No boarding and alighting is allowed at Marina Centre Terminal. The last stop for Marina Centre bound buses is at Raffles Boulevard (02089 Pan Pacific Hotel), and the first stop for Yishun bound buses is at Raffles Avenue (02101 Bef Temasek Ave).

Formerly a Singapore Bus Service (SBS) route since the 1970s, the route was transferred to Trans-Island Bus Service (TIBS) in 1995 and has been operated by SMRT ever since. Double-decker buses are not yet deployed as the service is not certified double-decker accessible yet.

Premature Double Decker Deployments

On 24 August 2015, SMB5059J (Alexander Dennis Enviro500) performed Service 171 in the evening as part of a crossover slot (969S151). On its maiden trip from Yishun to Marina Centre, the bus was withdrawn from revenue service at Bukit Panjang by the Operations Control Centre (OCC), which was likely due to the route not being officially certified as ready for double-decker deployment.

Another incident happened on 08 December 2016, where a MAN A95 Bus (SG5744S) performed Service 171 for several trips before being pulled out of service.

DTL2 Bukit Panjang Bus Service Enhancements

As part of DTL2 Bukit Panjang Bus Service Enhancements, Service 171 towards Marina Centre will call at a new bus stop, Bt Panjang Rd – Blk 184 instead of Bukit Panjang Rd – Blk 183 from 27 December 2015. Yishun bound Service 171 will still call at Bt Panjang Rd – Blk 604.

Opening of Bukit Panjang ITH Bus Service Amendments

As part of the Bus Service Amendments for Bukit Panjang ITH Opening, Bus Service 171 will skip the pair of bus stops along Jelebu Rd, serving Opp and Outside Bukit Panjang Plaza to “better manage traffic flow” outside Bukit Panjang Integrated Transport Hub from 04 Sep 2017.

The morning special departures from Jelebu Rd both towards Yishun and Marina Centre will also be adjusted to start from the next stop.

This amendment was reverted effective 25 Feb 2018 with Service 171 calling at a pair of bus stops (Blk 180 / Opp Blk 180) along Jelebu Road.

Special Departures:

  • Bt Panjang Rd (Blk 604)  Yishun Int
    Weekdays: 0540hrs & other trips before 0640hrs
    Saturdays: 0615hrs & other trips before 0640hrs
  • Petir Rd (Opp Petir Stn) Marina Centre Ter
    Weekdays: 0525hrs & other trips before 0605hrs

MRT/LRT Stations Served:

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




Operator History:

  • 1971 – 1973: United Bus Company Pte Ltd
  • 1973 – 1995: Singapore Bus Services Ltd
  • 1995 –  2004: Trans-Island Bus Services Ltd
  • 2004 – Present: SMRT Buses Ltd

The Bus Service Operating License (BSOL) for this route will be renewed in 2020 under the Sembawang – Yishun Bus Package.


  • 1971 (11 Apr): Introduced as Service 171 plying Mandai Rd (Near Sembawang Rd) – Queens St Ter
  • ???: Amended to Sembawang Rd (near Nee Soon Camp), ??? Amended to serve Mandai Lake Rd, ??? Amended to ply Orchard Rd
  • 1987 (18 Jan): Amended to Yishun Ctrl
  • 1987 (23 Aug): Amended to Yishun Int
  • ???: Amended to Marina Centre Ter
  • 1993 (03 Jan): Amended into Bt Panjang town
  • 1994 (26 Apr): Amended to skip Mandai Lake Rd in both directions with the introduction of service 138.
  • 1995 (05 Nov): Handed to Trans-Island Bus Services (TIBS)
  • 1999 (26 Dec): Amended to ply BKE instead of Woodlands Rd and Mandai Rd with the amendment of service 927.
  • 2006 (29 Oct): Serves Orchard Stn bus stop along Orchard Turn instead of Orchard Blvd
  • 2009 (01 Jun): Designated wheelchair-accessible bus route (WAB)
  • 2015 (14 Mar): Amended to Yishun Temp Int
  • 2015 (Jun): Bus Service Reliability Framework (BSRF) implemented for trial till Aug 2016
  • 2015 (27 Dec): Calls at Blk 184 instead of Blk 183 along Bt Panjang Rd towards Marina Centre as part of DTL2 Bukit Panjang Bus Service Enhancements
  • 2017 (04 Sep): Amended to skip a pair of bus stops along Jelebu Rd
  • 2017 (25 Feb): Calls at a new pair of bus stops (Blk 180 / Opp Blk 180) along Jelebu Rd

Past Routings:


External Links & References:

Back to Bus Services
Back to Bus Articles

Ding Dong Bell

Ding Dong!

2 thoughts on “SMRT Bus Service 171

  • 16 September 2017 at 5:16 PM

    Please be considerate for 171 commuters & not easing traffic flow along Jelebu Rd, especially during rainy days. We have to walk a long way back to Bukit Panjang Plaza!

  • 16 January 2017 at 9:01 PM

    Will u all be deploying MAN A95 Double Decker on SVC 171 Soon ?


Leave a Reply

Your email address will not be published. Required fields are marked *