Rail transport (also known as train transport) is a means of transport using wheeled vehicles running in tracks, which usually consist of two parallel steel rails.[1] Rail transport is one of the two primary means of land transport, next to road transport. It is used for about 8% of passenger and freight transport globally, [2] thanks to its energy efficiency[2] and potentially high speed. Also, the track spreads the weight of the train which means larger amounts can be carried than with trucks on roads.