The table illustrates the transportation data, underground railway system, in six main and massive cities such as London, Paris, Tokyo, Washington DC, Kyoto and Los Angeles. Including the opening date, kilometres of route and the number of passengers each year. Overview, most underground railway system was opened around 1900 B.C except the London and Los Angeles which was opened in 1863 and 2001 B.C accordingly.
According to the table, the London underground railway system has been opened since 1863 B.C. which is the longest period and had most kilometres of route compared to other five cities. However, the number of passenger per year is less than Paris and Tokyo, which is 1191 millions and 1928 millions, it can showed that the passenger number in London still significant massive when compared to other three cities left.
In the other hand, the underground railway system in Kyoto and Los Angeles are similair on the kilometres of route and passenger number because of the low data.