Bus 188

Operated by SMRT

DirectionFirst bus (wkday)Last bus AM peakAM off-peakPM peakPM off-peak
Choa Chu Kang Int → HarbourFront Int 05:30 23:00 5–9 min 8–15 min 8–13 min 14–16 min
HarbourFront Int → Choa Chu Kang Int 06:00 23:30 10–14 min 7–15 min 7–8 min 8–14 min

First/last bus are at the origin stop, weekdays. Frequencies are LTA's scheduled ranges in minutes.