Read a brief summary of this topic. subway, also called underground, tube, or métro, underground railway system used to transport large numbers of passengers within urban and suburban areas.
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A city's underground railway system is usually called the underground (often the Underground) in British English and the subway in North American English. Speakers of British English also use subway for systems in American cities and metro for systems in other European countries.
Leipzig Hauptbahnhof (Leipzig main station, IATA: XIT) is the central railway terminus in Leipzig, Germany, in the district Mitte. At 83,460 square metres (898,400 sq ft), it is Europe's largest railway station measured by floor area.
This involves the layout of three main track types: tangent track (straight line), curved track, and track transition curve (also called transition spiral or spiral) which connects between a tangent and a curved track.
In the United States, the Surface Transportation Board categorizes rail carriers into Class I, Class II, and Class III based on carrier's annual revenues.
The London Underground is often called the Tube because of the shape of the tunnels. The London Underground is one of the oldest metro systems in the world, opening in 1863. When the Central Line Railway opened in 1900, it was called the Twopenny Tube, referencing the price of a ticket.
Since then the Underground network, affectionately nicknamed the Tube by generations of Londoners, has grown to 272 stations and 11 lines stretching deep into the Capital's suburbs and beyond.