Operated by SBST
| Direction | First bus (wkday) | Last bus | AM peak | AM off-peak | PM peak | PM off-peak |
|---|---|---|---|---|---|---|
| Serangoon Int → Serangoon Int | 05:45 | 23:30 | 11–15 min | 12–17 min | 13–15 min | 17–24 min |
First/last bus are at the origin stop, weekdays. Frequencies are LTA's scheduled ranges in minutes.