屯門
Tuen Mun South extension is a proposed 2.4-kilometre extension of Hong Kong's Tuen Ma line to a new western terminus, Tuen Mun South (), in the vicinity of Tuen Mun Ferry Pier. The extension will extend southwards from the current western terminus Tuen Mun station. The journey time from Tuen Mun South to Tuen Mun is estimated to be approximately 4 minutes. It is planned to run on viaduct.