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
The Hunan provincial government launched the construction of a maglev line between Changsha Huanghua International Airport and Changsha South Railway Station. Construction started in May 2014 and was completed by the end of 2015. Trial runs began on 26 December 2015 and trial operations started on 6 May 2016. As of 13 June 2018 the Changsha maglev covered distance of 1.7 million km and carried nearly 6 million passengers. The next generation of this vehicle is rolled off the production line and is capable of running at a top speed of 160 km/h.