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Underground Railway


Underground Railway Also called Subway ; a railway that runs mainly underground. The first underground railway built just below street level opened in London in 1863, and was operated by steam locomotives, The first deep-level tube, operating in bored tunnels by electric locomotives, opened in London in 1890.

The Paris Metro, opened in 1900, differs from most other underground systems in having pneumatic tyres. Underground systems are becoming increasingly popular in large cities that suffer from traffic congestion in the streets. Underground trains have no separate locomotives, being powered by electric motors installed in the passenger cars. They pick up electricity either from a third rail by the track (London Underground) or an overhead wire (Metro).

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