Monicamita 1 / - Apr 4, 2019 #1underground systems statisticsThe table compares the data about the underground systems of railway in six cities.It is noticeable from the table that the underground railway of London, which was built earliest in the six systems, is also the longest one. Besides, Tokyo's railway surpasses the others in delivering the number of passengers per annual.Look clearly to the table, we can see that London opened its underground systems considerably early since 1983 while the railway system in Los Angeles is the newest, come into use in 2001, nearly 140 years later. Furthermore, the quantity of people in Tokyo travelling by underground railway per year stands in the leading position, by 1927 millions. In opposite, the systems in Kyoto and Los Angeles only serve no more than 50 millions passengers in one year period.Moreover, the length of London's underground system is the greatest one, by 394 kilometers, twice the second longest one in Paris. However, Kyoto and Los Angeles own the shortest underground railway systems, just 11 and 28 kilometers respectively.