Operated by SBST
| Direction | First bus (wkday) | Last bus | AM peak | AM off-peak | PM peak | PM off-peak |
|---|---|---|---|---|---|---|
| Bishan Int → Kampong Bahru Ter | 05:45 | 23:00 | 11–12 min | 12–15 min | 13–14 min | 13–18 min |
| Kampong Bahru Ter → Bishan Int | 06:10 | 23:30 | 13–17 min | 10–15 min | 10–18 min | 12–21 min |
First/last bus are at the origin stop, weekdays. Frequencies are LTA's scheduled ranges in minutes.