There's not really any reason to u-turn here, without any access roads or other parking (except the Hoi Wang Rd `bus_bay=` ). Going to The Austin should turn 3 lefts from Canton Rd northbound, or direct right turn on Wui Man Rd northbound from West Kowloon Station. Also no guidance is signposted. 
The `=*_link` makes it resemble  a `junction=jughandle` . A `=*_link` usually has no parking either. If it's not considered as an internal road part of the `=bus_station` facility, it could be `=residential` / `=unclassified` , instead of the `=service` previously. 