Operated by SBST
| Direction | First bus (wkday) | Last bus | AM peak | AM off-peak | PM peak | PM off-peak |
|---|---|---|---|---|---|---|
| Clementi Int → Joo Koon Int | 05:30 | 24:00 | 7–8 min | 6–10 min | 7–8 min | 9–11 min |
| Joo Koon Int → Clementi Int | 05:45 | 24:00 | 6–8 min | 5–10 min | 7–8 min | 11–15 min |
First/last bus are at the origin stop, weekdays. Frequencies are LTA's scheduled ranges in minutes.