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

The table provides information about six underground railway systems in terms of their opening date, their length, and the number of annual passengers.

Overall

, it is evident that

London

has the oldest and longest system of the six,

while

Tokyo

has the highest number of travellers per year. Meanwhile, the underground of

Kyoto

and Los Angeles are the newest and shortest

,

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and have the fewest commuters.

London

is not only the first city that has a metro available in 1863, followed by Paris in 1900. Meanwhile,

Tokyo

, Washington DC, and

Kyoto

all had the underground in the 20th century, and the L.A. subway just opened in 2001. In terms of the length of the route,

London

also

has the longest of the six with almost

400kms

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400 km

,

whereas

those of Paris,

Tokyo

, and D.C. are less than half of the length of

London

's. The undergrounds in

Kyoto

and L.A. are tiny in comparison, spanning just 11kms, and 28kms respectively. Looking in more detail at the traveller numbers, the

Tokyo

subway is used by around 2 billion people annually, meanwhile 1.191 billion travel on the Paris system, and 775 million commute by the

London

underground. The D.C. metro carries 144 million passengers per year, the figures for

Kyoto

and Los Angeles are just a third of Washington DC's.