New York's 722+ miles of tracks make it the longest subway system in the world, larger than those of London, Paris, Tokyo, or Seoul.

(pre 1995-ish figures)
That comes out to 6,400 cars, 469 stations, and an average of 2.7 million riders services per day. The NYC Transit Police Department employed nearly 4,000 officers as of 1992, which ranked it among the top ten largest police forces in the country.


Further info:

Passengers carried per day

London 3 million
Paris 4.4 million
Moscow 9 million
Tokyo 7 million
Prague 1.2 million
Mexico City 4.2 million
New York 4.7 million

Number of Stations and lines

London 275 stations, 12 lines
Paris 297 stations, 14 lines
Moscow 162 stations, 11 lines
Tokyo 209 stations, 12 lines
Prague 50 stations, 3 lines
Mexico City 175 stations, 11 lines
New York 468 stations, 25 lines

Cost of a ticket

London 90p to £5.30 (10 zones) - no flat fares
Paris 80p flat fare
Moscow 12p flat fare
Tokyo 90p to £1.68
Prague 24p flat fare
Mexico City 11p flat fare
New York £1.03 flat fare