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

The provided data set compares the

subway

networks in six major cities in terms of the starting

year

, the total length of the

train

track, and the number of commuters transported per

year

.

Overall

,

London

's underground railway is the first to operate and has the longest railway line among the rest.

Furthermore

, referring to the

quantity

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number

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of people served each

year

, Tokyo's beneath-the-surface

train

system holds the top place. In terms of the opening date and kilometres of the route, the

London

Subway

is the oldest, commenced in 1863, and bears the longest railroad line (around 400 km),

whereas

the newest to join the transportation is Los Angeles' underground

train

grid, which has a medium expansion of about half of

London

's track. Paris, Tokyo, and Washington, DC, all joined the underground transportation system between 1927 and 1976, with

train

lines ranging from 100km to 200km. Kyoto City was introduced with an underground

subway

in 1981, holding a modest 11-kilometre railway track, which is the minimum length for an underground

train

across these six cities. When considering the service provided, the Tokyo

train

grid is the busiest, handling almost 2000 million travellers each

year

,

while

Paris follows with over 1000 million cases handled. The oldest in the group, the

London

subway

, accommodates 775 million individuals annually. The other three

showcase

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showcases

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moderate usage by their townspeople, which indicates a trend of the latest

train

traks

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tracks

being designed to have

train

lines with short tracks intended to transport far fewer people than those of the past.