It is the only rail link to the airport's terminal. It runs parallel to the Tung Chung line, a traditional rapid transit line, from Hong Kong station to just south of the channel between Lantau Island and Chek Lap Kok Island, on which the airport was constructed. The line continues to the airport and terminates at AsiaWorld–Expo. The Tung Chung line terminates in the adjacent Tung Chung new town, with bus service to various areas at the airport, including the passenger terminals.