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.
From 16 August 2020, the route of Bus Service 171 will be shortened to Yishun – Bukit Panjang MRT (Loop).
171
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Note:
- No boarding and alighting at Marina Centre Terminal.
| Route Overview | ||||||||||||
| Route Image may be NSFW. Clik here to view.  |
Yishun Bus Interchange Image may be NSFW. Clik here to view.  Marina Centre Bus Terminal[From 16 Aug 2020] Yishun Bus Interchange ↺ Upper Bukit Timah Road (Loop) |
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| Passes Through | Yishun Ave 5, Sembawang Rd, Mandai Road, Petir Road, Upp Bukit Timah, Bukit Timah, Orchard, Bras Basah | |||||||||||
| Route Length | Towards Marina Centre: 34.4 km |
Towards Yishun: 34.3 km |
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| Traveling 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 A22 – Mercedes-Benz Citaro |
12-metre Double Deck Bus – Alexander Dennis Enviro500 – MAN A95 (Double Decker Bus Deployments on Sundays & Public Holidays) |
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| Operating Hours | ||||||||||||
| Departure Times from Yishun | Daily | |||||||||||
| 05:30 – 23:30 | ||||||||||||
| Departure Times from Marina Centre [Till 15 Aug 2020] |
Daily | |||||||||||
| 05:45 – 23:30 | ||||||||||||
| Operating Frequency | ||||||||||||
| 6:30am–8.30am | 8.31am–4.59pm | 5.00pm–7.00pm | After 7.00pm | |||||||||
| From Yishun |
10 – 13 mins | 10 – 14 mins | 10 – 15 mins | 11 – 15 mins | ||||||||
| From Marina Centre |
10 – 11 mins | 10 – 13 mins | 10 – 11 mins | 11 – 13 mins | ||||||||
| Fare Information |
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| Fare | Charges regular distance fares |
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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.
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).
Double Decker Bus 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.
From 12 August 2018, double-decker buses will be deployed on high-capacity bus slots on Service 171 on Sundays / Public Holidays instead of articulated buses.
Special Departures
[Till 15 Aug 2020]
- Bt Panjang Rd (Bt Panjang Stn/Blk 604) → Yishun Int
Weekdays: 0540hrs & other trips before 0640hrs
Saturdays: 0615hrs & other trips before 0640hrs - Petir Rd (Opp Petir Stn) → Marina Ctr Ter
Weekdays: 0525hrs & other trips before 0605hrs
MRT/LRT Stations Served
- NS13 Yishun
- BP8 Pending
- BP7 Petir
- DT1–BP6 Bukit Panjang
[MRT Stations served till 15 Aug 2020]
- DT2 Cashew
- DT3 Hillview
- DT5 Beauty World
- DT6 King Albert Park
- DT7 Sixth Avenue
- DT8 Tan Kah Kee
- CC19DT9 Botanic Gardens
- DT10 Stevens
- NS21–DT11 Newton
- NS22 Orchard
- NS23 Somerset
- NS24NE6CC1 Dhoby Ghaut
- DT21 Bencoolen
- CC2 Bras Basah
- CC3 Esplanade
- EW13NS25 City Hall
- CC4DT15 Promenade
Gallery (Buses):
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Poster Gallery:
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![[Updated] Route Amendment for Services 171, 856 & 859 - Opening of Yishun Integrated Transport Hub](http://landtransportguru.net/web/wp-content/uploads/2019/09/Sep19_Yishun-ITH-Opening_Sv171_856_859_Updated-212x300.png)
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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.
History:
- 1971 (11 Apr): Introduced between Sembawang Ter and Queen St Ter under 1971 Bus Reorganisation
- 1973 (25 Jun): Amended to ply Mandai Lake Rd in both directions until 2200 hours daily
- 1979 (28 Oct): Amended to ply Sungei Rd, Ophir Rd and Ban San St (towards Queen St Ter) and amended to ply Rochor Canal Rd and Bt Timah Rd, skipping Bencoolen St, Middle Rd, Selegie Rd and Mackenzie Rd (towards Sembawang Ter) with the conversion of Rochor Canal Rd and Rochor Rd to one-way traffic
- 1979 (30 Dec): Amended to ply Jln Anak Bt towards Queen St Ter with the partial conversion of Upp Bt Timah Rd to one-way traffic
- 1984 (15 Apr): Amended to ply Scotts Rd, Orchard Rd and Victoria St/North Bridge Rd, skipping Bt Timah Rd and Sungei Rd/Rochor Canal Rd
- 1985 (13 Oct): Amended to the relocated Queen St Ter along Ban San St, skipping Arab St
- 1987 (18 Jan): Amended to Yishun Central Ter
- 1987 (23 Aug): Amended to Yishun Int
- 1987 (13 Dec): Serves new staggered bus stop outside Orchard Stn along Orchard Blvd, skipping the bus stop opposite Orchard Stn; Serves new bus stop outside Newton Stn along Scotts Rd
- 1992: Amended to ply Orchard Link, skipping Grange Rd
- 1993 (03 Jan): Extended to Marina Ctr Ter and amended to ply Bt Panjang Rd, Pending Rd and Cashew Rd under TransitLink Network Integration Exercise Phase 11
- 1994 (26 Apr): Amended to skip Mandai Lake Rd and amended to ply Mandai Ave with the introduction of Service 138
- 1995: Amended to ply Orchard Turn
- 1995 (05 Nov): Handed to Trans-Island Bus Services (TIBS)
- 1999 (26 Dec): Amended to ply BKE, Bt Panjang Rd, Petir Rd, Jelebu Rd under Bukit Panjang LRT Rationalisation, skipping Woodlands Rd and Cashew Rd
- 2000: Serves new bus stop before Goldhill Ave along Dunearn Rd
- 2000: Serves additional bus stop opposite Sembawang Air Base along Sembawang Rd
- 2002 (07 Jul): Serves the bus stop outside Blk 923 along Yishun Ave 2, skipping the bus stop outside Northpoint Shop Ctr; Skips the bus stop outside Orchard Emerald along Orchard Rd
- 2003 (24 Aug): Serves the bus stop outside Northpoint Shop Ctr along Yishun Ave 2, skipping the bus stop outside Blk 923
- 2005 (02 Jul): Amended to ply Grange Rd and Orchard Link with the partial closure of Somerset Rd
- 2006 (29 Oct): Serves relocated bus stop outside Orchard Stn along Orchard Turn
- 2009 (01 Jun): Designated wheelchair-accessible bus route (WAB)
- 2009 (21 Jun): Serves new pair of bus stops outside and opposite Mandai Crematorium & Columbarium along Mandai Ave
- 2010 (23 May): Skips temporarily abolished bus stop outside Assumption Voc Inst along Upp Bt Timah Rd to facilitate the construction of Cashew MRT station along the Downtown MRT Line
- 2001 (04 Sep): Serves new bus stop outside Botanic Gdns Stn along Bt Timah Rd
- 2015 (01 Mar): Serves reinstated bus stop outside Assumption Pathway Sch along Upp Bt Timah Rd
- 2015 (14 Mar): Amended to Yishun Temp Int
- 2015 (27 Dec): Serves new bus stop outside Blk 184 along Bt Panjang Rd, skipping the bus stop outside Blk 183 as part of DTL2 Bukit Panjang Bus Service Enhancements
- 2017 (04 Sep): Skips a pair of bus stops outside and opposite Bt Panjang Plaza along Jelebu Rd
- 2018 (25 Feb): Serves additional pair of bus stops outside and opposite Blk 180 along Jelebu Rd
- 2019 (08 Sep): Amended to Yishun Integrated Transport Hub
- 2020 (16 Aug): Shortened to loop at Bukit Panjang MRT from Yishun
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