The table shows information about underground railway systems in six cities, including the year they opened, the length of their routes, and the number of passengers per year.
Overall, older systems are generally larger and more widely used than newer ones. London Underground is the oldest and has the longest route, while Tokyo Metro has the highest number of passengers.
London, opened in 1863, has 394 kilometres of track and carries 775 million passengers annually. Similarly, Paris Métro, which opened in 1900, transports 1,191 million passengers, although its route is shorter at 199 kilometres.
In contrast, newer systems such as Washington Metro and Los Angeles Metro Rail have fewer passengers, at 144 million and 50 million respectively. Kyoto Municipal Subway is the smallest system, with only 11 kilometres of track and 45 million passengers per year.
