Members of the public are advised that, the first Tuen Mun Station Public Transport Interchange departure of KMB Route No. B9 (Tuen Mun Station – Heung Yuen Wai Boundary Control Point) (Heung Yuen Wai bound) will be advanced from 9.00 a.m. to 8.30 a.m. on Mondays to Fridays (except Public Holidays) with effect from 27 May 2024 (Monday). The headway of Tuen Mun Station Public Transport Interchange departures of this route in the morning will be adjusted accordingly as follows:
| Day | Period | Headway (minutes) |
| Mondays to Fridays (except Public Holidays) |
8.30 a.m. to 9.30 a.m. | 20 |
| 9.30 a.m. to 4.00 p.m. | 30 |
Notices will be displayed by the bus company to inform passengers of the above arrangements.