The table compares six underground railway systems based on various factors, including cities, opening dates, kilometers of routes, and annual passenger numbers.
Overall, it is clear from the table that the number of passengers has decreased over the years. The most popular underground railway system was in Tokyo, which achieved 1,927 passengers per year.
The first underground railway system was opened in London in 1863, making it the system with the longest route. Twenty-seven years later, Paris opened its railway system, which had a shorter route compared to London. However, Paris gained popularity among passengers. In 1927, Tokyo emerged as the most popular underground railway system. Despite having a smaller area than the others, Tokyo achieved the highest number of passengers.
The next railway system opened in Washington in 1976, featuring a route that was half the length of the original London system. Following this, the number of passengers declined in the underground systems of other cities. The least popular system was in Los Angeles, which attracted only 50 million passengers and had a route length similar to the others.