The given illustration is a tabular representation of some details regarding the belowground railway networks in six urban regions. These regions are London, Paris, Tokyo, Washington DC, Kyoto, and Los Angeles.

In general, the networks established before 1950 are longer and serve more individuals yearly than the networks established after 1950.

The London city network was inaugurated in 1863. It covers 394 kilometers and facilitates the travel of 775 million users every year. In 1900, the Paris network was made available, and its length is 199 kilometers. A significant 1,191 million passengers avail themselves of it on a yearly basis. Started in 1927, though the Tokyo system (155 kilometers) is shorter than the Paris one, the former has a yearly passenger footfall that is approximately twice that of the latter.

With a 126-kilometer length, the 1976 Washington DC system is made use of by 144 million travelers in a year. Kyoto’s (1981) and Los Angeles’ (2001) systems have double-digit route lengths. They are 11 kilometers and 28 kilometers, respectively. Their passenger intakes are similar, too, at 45 million (Kyoto’s) and 50 million (Los Angeles’).

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