Operated by SBST
| Direction | First bus (wkday) | Last bus | AM peak | AM off-peak | PM peak | PM off-peak |
|---|---|---|---|---|---|---|
| Hougang Ctrl Int → Buona Vista Ter | 05:30 | 23:30 | 5–12 min | 5–13 min | 5–11 min | 10–12 min |
| Buona Vista Ter → Hougang Ctrl Int | 06:00 | 23:20 | 6–13 min | 5–13 min | 9–13 min | 9–13 min |
First/last bus are at the origin stop, weekdays. Frequencies are LTA's scheduled ranges in minutes.