The route operates from Serangoon Bus Interchange and ends at Aljunied Road (Aljunied Stn), operating on Weekdays AM and PM Peak hours.
|Route||Serangoon Bus Interchange → Aljunied Road (Aljunied Stn)|
|Passes Through||Upp S’goon Rd, Upp Aljunied Rd|
|Route Length||4.8 km|
|Journey Time||~15 mins|
|BCM Route Package||Clementi Bus Package|
|Current Operator||SBS Transit Ltd|
|Current Depot||Hougang Bus Depot|
|Current Fleet||12-metre Single Deck Bus:
– Mercedes-Benz Citaro
– Scania K230UB
||Weekdays, except Public Holidays
From Serangoon Interchange: 0630hrs–0911hrs, 1741hrs–1942hrs
Short Trip Service 100A is a trunk service operating from Serangoon Bus Interchange and ends at Aljunied Road (Aljunied Stn).
As a Short-Trip Service, the route operates on Weekdays, during both the AM Peak and PM Peak hours, and supplements the high demand for Service 100 from Serangoon and Aljunied Road to Aljunied MRT Station.
- From Serangoon Interchange:
Weekdays, except Public Holidays: 0630hrs, 0715hrs, 0751hrs, 0811hrs, 0911hrs, 1741hrs, 1811hrs, 1830hrs, 1853hrs, 1908hrs, 1923hrs, 1942hrs
Fare: Charges regular distance fares for trunk services. See Bus Fares.
MRT Stations served:
- ??? – Present: SBS Transit Ltd