Colonization of the Moon
If multiple bases were established on the lunar surface, they could be linked together by permanent railway systems. Both conventional and magnetic levitation (Maglev) systems have been proposed for the transport lines. Mag-Lev systems are particularly attractive as there is no atmosphere on the surface to slow down the train, so the vehicles could achieve velocities comparable to aircraft on the Earth. One significant difference with lunar trains, however, is that the cars would need to be individually sealed and possess their own life support systems.
Maglev
An extension of the line could run to Chiang Kai Shek Airport, and possibly on down the island, passing through major population centres, which the High Speed Rail must avoid. The minimal vibration of maglev would also be suitable to provide access Hsinchu Science Park, where sensitive silicon foundries are located. In the other direction, connection to the Tansui Line and to High Speed ferries at Tansui would provide overnight travel to Shanghai and Nagasaki, and to Busan or Mokpo in South Korea, thus interconnecting the public transport systems of four countries, with great savings in fossil fuel consumption compared to flight.