SBS Transit Bus Service 100 is a trunk service plying between Serangoon and Ghim Moh, passing through Upper Aljunied, Geylang Road, Beach Road, Shenton Way, HarbourFront, Alexandra, Queensway and Buona Vista.
100
Note:
- No alighting at Ghim Moh Ter. The last stop towards Ghim Moh Ter is at Blk 7, Ghim Moh Rd.
| Route Overview | ||||||||||||
Route  |
Serangoon Bus Interchange ↔ Ghim Moh Bus Terminal | |||||||||||
| Passes Through | Aljunied Rd, Beach Rd, Shenton Way / Robinson Rd, Telok Blangah Rd, Queensway | |||||||||||
| Route Length | Towards Ghim Moh: 23.8 km | Towards Serangoon: 23.3 km | ||||||||||
| Travelling Time | 85 mins | |||||||||||
| Operator Information | ||||||||||||
| BCM Route Package | Clementi Bus Package | |||||||||||
| Current Operator | SBS Transit Ltd | |||||||||||
| Current Depot | Bukit Batok Bus Depot (BBDEP) Hougang Bus Depot (HGDEP) |
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| Current Fleet | Single-deck buses | |||||||||||
| Operating Hours | ||||||||||||
| Departure Times from Serangoon |
Daily | |||||||||||
| 05:30 – 23:45 | ||||||||||||
| Departure Times from Ghim Moh |
Daily | |||||||||||
| 06:00 – 00:00 | ||||||||||||
| Operating Frequency | ||||||||||||
| From Serangoon |
6:30am–8.30am | 8.31am–4.59pm | 5.00pm–7.00pm | After 7.00pm | ||||||||
| Weekdays | 6 – 12 mins | 5 – 20 mins | 10 – 13 mins | 13 – 15 mins | ||||||||
| Saturdays | 12 – 14 mins | 11 – 16 mins | 13 – 15 mins | 14 – 17 mins | ||||||||
| Sundays / Public Holidays | 14 – 15 mins | 14 – 16 mins | 14 – 15 mins | 14 – 15 mins | ||||||||
| From Ghim Moh |
6:30am–8.30am | 8.31am–4.59pm | 5.00pm–7.00pm | After 7.00pm | ||||||||
| Weekdays | 7 – 8 mins | 6 – 13 mins | 8 – 10 mins | 14 – 15 mins | ||||||||
| Saturdays | 14 – 15 mins | 12 – 15 mins | 11 – 15 mins | 12 – 15 mins | ||||||||
| Sundays / Public Holidays | 14 – 15 mins | 11 – 16 mins | 14 – 15 mins | 13 – 15 mins | ||||||||
| Fare Information |
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| Fare | Charges regular distance fares |
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Service 100 connects Serangoon and Ghim Moh to the Central district, passing through Queenstown, Telok Blangah, Shenton Way, Beach Road and Aljunied. The route also connects heavy demand sectors between Serangoon Interchange and the industrial estates near Kallang Way.
MRT Stations Served
- NE12CC13 Serangoon
- NE11Â Woodleigh
- EW9Â Aljunied
- EW10Â Kallang
- CC3Â Esplanade
- EW14NS26 Raffles Place
- TE19Â Shenton Way
- EW15Â Tanjong Pagar
- NE1CC29 HarbourFront
- CC28Â Telok Blangah
- CC27Â Labrador Park
- EW20Â Commonwealth
- EW21CC22 Buona Vista
Special Departures
- Beach Rd (Opp St. John HQ) → Serangoon Int
Weekdays: 06:30 & 06:39 - Sims Ave (Aft Lor 1 Geylang) → Serangoon Int
Weekdays: 18:19, 18:48, 19:07, 19:27 & 19:42
Short Trip Service
- Service 100A: Serangoon Int → Aljunied Rd (Aljunied Stn)
Weekdays, except Public Holidays: 06:29 – 08:59 & 17:41 – 19:37
Gallery
Poster Gallery
Operator History
- 1971: Singapore Traction Company
- 1971 – 1974: Associated Bus Service
- 1974 – 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.
History
- 1971 (11 Apr): Introduced between Serangoon Garden Ter and Prince Edward Rd Ter under 1971 Bus Reorganisation
- 1971 (09 May): Integrated with Service 100A and re-numbered Service 100/100A
- 1971 (06 Dec): Operations transferred to Associated Bus Service (ABS)
- 1974 (03 Feb): Re-numbered from Service 100/100A as a service between Serangoon Garden Ter and Prince Edward Rd Ter under 1974 Bus Rationalisation
- 1974 (08 Dec): Amended to ply the extended Robinson Rd, skipping Market St
- 1975 (02 Mar): Amended to ply Sims Ave towards Serangoon Garden Ter with the conversion of Geylang Rd to one-way traffic
- 1975 (21 Jul): Amended to ply St. Andrew’s Rd and Stamford Rd, skipping Coleman St and Hill St
- 1976 (15 Feb): Serves new staggered bus stop between Bank of India and Hong Leong Holdings along Robinson Rd
- 1976 (14 Mar): Serves new staggered bus stop outside The Cenotaph along Connaught Dr, skipping the bus stop opposite Singapore Cricket Club
- 1976 (16 Aug): Amended to ply Aljunied Rd with the introduction of Service 60, skipping MacPherson Est in both directions
- 1977 (31 Oct): Amended to skip Chartwell Dr, Burghley Dr, Berwick Dr, Tavistock Ave, Hemsley Ave and Kensington Park Rd with the introduction of Service 217
- 1979 (11 Feb): Amended to ply the extended Shenton Way, Palmer Rd and Anson Rd, skipping Parsi Rd
- 1985 (13 Jan): Extended to World Trade Ctr Ter
- 1988 (03 Jan): Serves new staggered bus stop opposite Treasury Bldg along Shenton Way, skipping the bus stop opposite Marina House
- 1988 (13 Mar): Amended to Serangoon Int
- 1989 (05 Nov): Integrated with Service 20, extended to Ghim Moh Ter and amended to ply Beach Rd, skipping North Bridge Rd/Victoria St
- 1994 (03 Jul): Amended to ply Crawford St towards Serangoon Int
- 1996: Serves additional bus stop outside Kallang Stn along Sims Ave
- 1999: Skips abolished pair of bus stops outside and opposite Wishart Rd along Telok Blangah Rd
- 2002: Serves new pair of bus stops after Sommerville Rd and after Sunshine Lodge along Upp Serangoon Rd
- 2006 (29 Oct): Serves new bus stop outside VivoCity along Telok Blangah Rd
- 2007 (28 Apr): Serves additional bus stop outside Victoria Concert Hall along Fullerton Rd
- 2008 (07 Dec): Skips abolished bus stop opposite Temenggong D Mosque along Telok Blangah Rd
- 2011 (03 Sep): Amended to Serangoon Integrated Transport Hub
- 2011 (26 Sep): Designated wheelchair-accessible bus service (WAB)
- 2016 (01 May): Amended to ply Esplanade Dr with the partial closure of Fullerton Rd
- 2017 (12 Mar): Amended to ply Upp Serangoon Rd and the diverted Upp Aljunied Rd
- 2021 (26 Dec): Amended to ply Esplanade Dr towards Ghim Moh Ter due to closure of Connaught Dr to all vehicles
- 2023 (10 Sep): Amended to terminate at bus stop outside Blk 7 along Ghim Moh Rd and use new bus turnaround point along Ghim Moh Rd to Ghim Moh Ter
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Guys New news With Effect from 10 Sept. 2023 u are not allowed to alight at Ghim Moh Ter u must take until the last stop.
Transitlink website and bus stop info don’t mention Blk 7 as the terminating stop, Blk 7 doesn’t even have any “for alighting only” notices even though the amendment poster called it the terminating stop. It seems that you can still alight at Ghim Moh Terminal technically, though there’s really no reason why you would.
No u can’t
Ehhhhh idk la i have no proof of it, the SBS amendment poster and current SBS website says alighting isn’t allowed, but Transitlink and all bus stop posters show the routing all the way to Ghim Moh Ter with an express section. Idk why they decided to make conflicting info posters but it be like that I guess
Aljunied Road goes through Joo Chiat, never look on Google Maps ah?
Erm I think you’re mistaken? Aljunied road does not pass through Joo Chiat.
Anyways, some buses plying Aljunied road have double deckers e.g. 62 & 64. Hence the user’s question on why there are no double deckers on 100.
MRT (EWL) is faster than bus. That is the reason why bus 100 does not need double deck, there is short-working trip 100A from Serangoon to Aljunied, serving Bidadari residents and there are no direct MRT links from Serangoon to Aljunied.
Previously, on 5 November 1989, service 20 (Bedok – Ghim Moh) will definitely lose ridership when the MRT is ready and no one will spend long journeys on the bus. But there is a lot of trade-offs being involved as the section from Crawford to Commonwealth (excluding City Hall, Raffles Place and Tanjong Pagar) on the service 20 that it is in, do not have any MRT stations. The Fidelio Street and Frankel Avenue will get a feeder bus service 42, whereas service 100 can be amended and extended to skip roads with low ridership such as North Bridge Road (Lavender and Bugis).
Even service 13 has duplicated service 111 to the extent from Ghim Moh to Orchard Road, service 7 was amended to skip Suntec City and instead ply Bugis area, ever since the MRT is fast for long journeys from Bedok to Orchard Road area while complementing it for people who are staying further away from the MRT station. That explains the reason why there is no bus service from Suntec to Kembangan area by now? And also 13 had went to Bishan and Yio Chu Kang to replace 58 and 133.
Even 135’s constraint is just relying on private estate – Frankel alone.
155’s height restriction is Telok Kurau only as it passes smaller roads.
Sorry, it’s Joo Seng
Why are there no double-decker buses deployed on this service? I realise that buses starting from serangoon interchange see poor deployment of double-decker buses (even services 109, 103 which see considerable demand only have few double-decker buses plying the route daily)
Joo Chiat have height restricton
but this service doesn’t pass through Joo Chiat. Isn’t that 155?