SBS Transit Bus Service 138A is a Short-Trip Service variant of Bus Service 138.
The route operates from Ang Mo Kio Bus Interchange and ends at Mandai Lake Road (S’pore Zoo), operating during the mornings of Weekends & Public Holidays.
→ S'Pore Zoo


Route Overview | ||||||||||||
Route ![]() |
Ang Mo Kio Bus Interchange → Mandai Lake Road (S’pore Zoo) | |||||||||||
Passes Through | Ang Mo Kio Ave 6, Ang Mo Kio Ave 5, Upp Thomson Rd, Mandai Rd | |||||||||||
Route Length | 13.8 km | |||||||||||
Travelling Time | 40 mins | |||||||||||
Operator Information | ||||||||||||
BCM Route Package | Seletar Bus Package | |||||||||||
Current Operator | SBS Transit Ltd | |||||||||||
Current Depot | Seletar Bus Depot | |||||||||||
Current Fleet | Single Deck Bus – MAN A22 – Mercedes-Benz Citaro |
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Operating Hours | ||||||||||||
Departure Times from Ang Mo Kio |
Saturdays | Sundays / Public Holidays |
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08:32 – 12:13 | 08:24 – 12:29 | |||||||||||
Fare Information |
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Fare | Charges regular distance fares |
Short Trip Service 138A is a trunk service operating from Ang Mo Kio Bus Interchange and ends at Mandai Lake Road (S’pore Zoo).
The Short-Trip Service operates on weekends & public holidays to supplement the high demand for Service 138 from Ang Mo Kio MRT/Int to the Mandai Wildlife Reserve, which houses attractions such as Bird Paradise, River Wonders, Singapore Zoo and Night Safari.
Departure Timings
- From Ang Mo Kio Int:
Saturdays: 08:32, 08:46, 09:00, 09:14, 09:28, 09:42, 09:56, 10:10, 10:24, 10:38, 10:52, 11:06, 11:20, 11:34, 11:47, 12:00 & 12:13
Sundays / Public Holidays: 08:24, 08:37, 08:50, 09:17, 09:44, 10:12, 10:40, 10:54, 11:21, 11:35, 11:48, 12:02, 12:15 & 12:29
MRT Stations Served
- NS16 Ang Mo Kio
- TE4 Springleaf
Gallery:
Operator History:
- 2012 – Present: SBS Transit Ltd
The Bus Service Operating License (BSOL) for this route will be renewed in 2025 under the Seletar Bus Package.
Route History:
- 2012 (01 Dec): Introduced from Ang Mo Kio Integrated Transport Hub to Mandai Lake Rd (S’pore Zoo) on Saturdays, Sundays and Public Holidays
- 2018 (11 Mar): Start of operations under Seletar Bus Package (Tendered Contract)
- 2018 (14 Oct): Skips abolished bus stop before Singapore Zoo along Mandai Lake Rd
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