The table illustrates the operation of the underground rail network with 3 types, including age, size and people using.
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 system was the largest with 394 kilometers of route, but the number of passengers using it to move per year was lower than the Tokyo- was member reached the third of size – about 1000 million people with 775 million movers. While the second city about the length of the route was Paris, less than London about 3 times, with 199 kilometers of route, it served 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 the Kyoto and Los Angeles systems was around 11 kilometers and 28 kilometers respectively. Los Angeles was the newest CITY in 2001, constructing rrailway but having more passengers than Kyoto with 45 million people per year.