- 1 extra bus.
- 1 Feeder 811 DD & 2 Feeder 811 SDs will perform supplementary trips as Short-Trip 811A during Weekdays PM Peak & PM Off-Peak.
- 1 Feeder 811 bus will perform one (1) down-route trip as Feeder 811 from Yishun Interchange via Yishun Avenue 1 (South loop) before Weekdays AM Peak, departing at 0550 hours.
- 3 Feeder 811 buses will perform one (1) terminating trip as Feeder 811T from Yishun Interchange via Yishun Avenue 5 (North loop) during Sundays & Public Holidays PM Off-Peak, departing at 0030 hours, 0042 hours & 0055 hours.
- 5 Feeder 811 buses will perform one (1) terminating trip as Feeder 811T from Yishun Interchange via Yishun Avenue 5 (North loop) during Saturdays PM Off-Peak, departing at 0025 hours, 0032 hours, 0040 hours, 0048 hours & 0055 hours.
- 5 Feeder 811 buses will perform one (1) terminating trip as Feeder 811T from Yishun Interchange via Yishun Avenue 5 (North loop) during Weekdays PM Off-Peak, departing at 0025 hours, 0032 hours, 0039 hours, 0047 hours & 0055 hours.
- SMB3119H (Feeder 811) will perform crossover trips on Feeder 805 during Weekdays PM Peak.
- Several Feeder 811 buses will perform terminating trips as Feeder 811T from Yishun Avenue 7 (Bus Stop 59219 - Opp Blk 288) towards Yishun Interchange before & during Weekdays AM Peak.
- Several Feeder 811 buses will perform terminating trips as Feeder 811T from Yishun Interchange via Yishun Avenue 1 (South loop) during Weekdays AM Peak, PM Peak & PM Off-Peak.
- All Feeder 811 buses with the "T" suffix will terminate at Yishun Interchange and will not ply the other loop.
- This service practices jumpbus.
- Weekdays: 12AM-12PM / 6S / 3E / 1T (21 buses)
- Saturdays: 13AM-13PM / 5T (17 buses)
- Sundays & Public Holidays: 12AM-12PM / 5T (16 buses)
- Special Weekdays: 13AM-12PM / 6S / 3E (20 buses)
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