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