The provided chart depicts the six distinct railway systems in six cities, namely: London, Paris, Tokyo, Washington DC, Kyoto, and Los Angeles.
Overall, the London underground is the oldest system, which also had the highest figure of route, whereas Tokyo was recorded as having the biggest number of people using this system per annum. Nonetheless, Kyoto was the place that had the smallest number in both categories, route and passengers.
Specifically, the oldest system was London, having 394 kilometers, with 775 million people employing this system per year in 1863. The second largest was Paris with 199 kilometers and 1191 million customers in 1900. The third largest was Tokyo with 155 kilometers and 1927 million passengers per year (the highest figure in this category) in 1927.
Turning to the remaining cities, there were a tiny number under 30 km of route in both Kyoto and Los Angeles in 1981 and 2001, respectively, while 126 km was recorded by Washington DC in 1967. In addition, the smallest number of passengers was Kyoto with 45 million, in contrast with 144 million and 50 million in Washington DC and Los Angeles, in that order.