Singapore bus service
181M
Boon Lay Int, looping.
18 stops · SMRT Buses
EW27Rail connection
The loop
18 stops, Boon Lay Int, looping.
First and last bus are LTA's scheduled times for each stop, so they get later as the bus works along the route. Live arrival times are on each stop's own page. Data updated 2026-08-22.