Operated by SBST
| Direction | First bus (wkday) | Last bus | AM peak | AM off-peak | PM peak | PM off-peak |
|---|---|---|---|---|---|---|
| Toa Payoh Int → Buona Vista Ter | 05:30 | 24:00 | 7–8 min | 7–15 min | 9–10 min | 13–14 min |
| Buona Vista Ter → Toa Payoh Int | 05:30 | 23:30 | 8–9 min | 7–12 min | 6–9 min | 8–13 min |
First/last bus are at the origin stop, weekdays. Frequencies are LTA's scheduled ranges in minutes.