SBS Transit Bus Service 138A

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.

Ang Mo Kio Int
→ S'Pore Zoo
54009 Ang Mo Kio Int B1 NS16 Ang Mo Kio Ave 8
54247 Blk 322 Ang Mo Kio Ave 3
54031 Opp Al-Muttaqin Mque Ang Mo Kio Ave 6
54041 Opp Courts Ang Mo Kio Ang Mo Kio Ave 6
54051 Bef Ang Mo Kio Ave 5 Ang Mo Kio Ave 6
54469 Opp Blk 649 Ang Mo Kio Ave 5
54459 Blk 151 Ang Mo Kio Ave 5
55111 Blk 180 Ang Mo Kio Ave 5
55121 Opp Blk 604 Ang Mo Kio Ave 5
56209 Bef Thomson Hills Dr Yio Chu Kang Rd
56199 Aft Thomson Hills Dr Yio Chu Kang Rd
56041 Opp Meadows @ Peirce Upp Thomson Rd
56051 Opp Tagore Rd Upp Thomson Rd
56061 Aft Tagore Dr Upp Thomson Rd
56071 Bef Old Upp Thomson Rd Upp Thomson Rd
56081 Bef SLE Upp Thomson Rd
56091 Springleaf Stn Exit 3 TE4 Upp Thomson Rd
57011 Opp Springleaf Nature Pk Upp Thomson Rd
57149 Aft Upp Thomson Rd Mandai Rd
48109 Opp Meng Suan Rd Mandai Rd
48099 Opp SCDF Nee Soon Camp Mandai Rd
48089 Upp Seletar Reservoir Mandai Rd
48079 Opp Mandai Crematorium Mandai Rd
48069 Aft Mandai Ave Mandai Rd
48059 Opp Mandai Agrotech Pk Mandai Rd
48049 Bef Jln Ulu Sembawang Mandai Rd
48039 LP 159 Mandai Rd
48029 Bef Mandai Lake Rd Mandai Rd
48111 Opp Bird Paradise Mandai Lake Rd
48131 S'Pore Zoo Mandai Lake Rd
Route Overview
Route WAB_logo_20px 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 13.9 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 buses
Operating Hours
Departure Times from Ang Mo Kio
Saturdays Sundays / Public Holidays
08:32 – 12:13 08:26 – 12:29
Fare Information
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.

MRT Stations Served


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: 08:26, 08:38, 08:50, 09:17, 09:44, 10:12, 10:40, 10:54, 11:21, 11:35, 11:50, 12:02, 12:15 & 12:29



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

Back to Bus Service 138
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