For traffic arrangements during Typhoon signal is up, please refer to the followings:
Free Shuttle Bus service:
When Typhoon Signal No. 8 or above or the black rain storm warning signal is hoisted by the Hong Kong Observatory, the shuttle bus service will be suspended one hour before the signal is hoisted. The service will resume 2 hours after the lowering of Typhoon Signal No. 8 or above or the cancellation of black rain storm warning.
Airport Express:
Please click the following link for more information.
http://www.mtr.com.hk/en/customer/services/airport express index.html