The table illustrates the underground rail network in six major cities.
Overall, the oldest systems were London, Paris and Tokyo had the larger size and served considerably more movers than the new systems that include Washington DC, Kyoto and Los Angeles.
About the time it opened, the oldest systems were situated in London since 1863. At once, this was also the largest system with 394 kilometers of route, but the passengers used to move per year lower than the Tokyo – member reach the third about size – about 1000 million people with 775 million movers. While the second city about the length of route was Paris, less than London about 3 times, with 199 kilometers of route , however, it serves more people per year.
With 3 cities having new systems , the Washington DC underground was the most extensive, with 126 kilometers of route, compared to Kyoto and Los Angeles systems was around 11 kilometers and 28 kilometers respectively. Los Angeles was the newest city in 2001 constructing a railway but having the amount of more passengers than Kyoto with 45 million people per year.