The London Underground, also known as "London Unde...

The London Underground, also known as "London Underground" or, for short, simply "Underground" or "The Tube", is a railway network in London, United Kingdom, which serves most of Greater London (Greater). London) and sections of Essex, Buckinghamshire and Hertfordshire. The original metro section is the oldest in the history of urban railways, as it began operating on January 10, 1863 [1] (according to other sources on January 9, 1863) [2]. It was also the first electric metro in the world (1890).

Today the metro has a network with a total length of 402 km (45% of which is underground) and 270 stations. The average speed of the trains is 33 km / h, each train travels 184,269 km per year.