Operated by TTS
| Direction | First bus (wkday) | Last bus | AM peak | AM off-peak | PM peak | PM off-peak |
|---|---|---|---|---|---|---|
| Blk 306B → Marina Bay Financial Ctr | 07:15 | 08:00 | 6–10 min | — | — | — |
| Marina Bay Stn → Blk 321 | 17:30 | 18:30 | — | — | 15 min | — |
First/last bus are at the origin stop, weekdays. Frequencies are LTA's scheduled ranges in minutes.