The diagram illustrates detailed data about the railway systems underground in six urban areas.
Overall, it is clear from the graph that Tokyo and Paris had the significant proportion of passengers in the year 1927and 1900 respectively. By contrast, Kyoto and Los Angeles had the least passengers.
London travelled the highest kilometres of routes, whereas Kyoto had the shortest travelling distance. Paris, Tokyo, and Washington D.C. had a period of volatility for the figures in kilometres of routes.
In the year 1977, Washington D.C. had three times the figures of passengers in Kyoto. Tokyo had more than twice the figures of passengers presented in London. Los Angeles had the second least of passengers in the year 2001, as well as kilometres of routes. By far, it can be inferred from the graph that, as the year increases, the route kilometres of routes decreased, except for Los Angeles that had a slight increase in the year 2001.
