The table shows data about underground railway systems in six major cities with the date they opened, kilometers of route, and passenger numbers per year in millions. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

The table provides information on underground railway systems in six significant cities, detailing the year each system was inaugurated, the total length of their routes in

kilometres

, and the annual number of

passengers

in millions. London's underground system, being the oldest, opened in 1863 and boasts the longest

route

at 394

kilometres

. Despite its extensive network, it only ranks third in terms of

passenger

numbers, with 775

million

users per year.

On the other hand

, Tokyo, which opened in 1927, has the highest number of

passengers

annually at 1928

million

, despite having a shorter

route

length of 155

kilometres

. Paris

,

Remove the comma

apply

show examples

opened in 1900, has a

route

length of 199

kilometres

and serves 1191

million

passengers

annually, making it second in

passenger

usage. Meanwhile, newer systems like Washington DC, Kyoto, and Los Angeles have significantly smaller

route

lengths and

passenger

numbers.

For instance

, Kyoto, with just 11

kilometres

of

route

, caters to 45

million

passengers

per year,

while

Los Angeles, with 28

kilometres

, serves 50

million

annually.

Overall

, older and more extensive underground systems tend to have higher

passenger

numbers,

although

exceptions like Tokyo highlight that efficiency and population density can

also

significantly influence ridership.