Chicago "L"

The Chicago "L" is the rapid transit system serving the city of Chicago and some of its surrounding suburbs in the U.S. state of Illinois. Operated by the Chicago Transit Authority, it is the fourth-largest rapid transit system in the United States in terms of total route length, at 102.8 miles long as of 2014, and the third-busiest rail mass transit system in the United States, after the New York City Subway and the Washington Metro. In 2016, the "L" had 1,492 rail cars, eight different routes, and 145 train stations; average weekday ridership was 759,866.The "L" provides 24-hour service on the Red and Blue Lines and is one of only five rapid transit systems in the United States to do so. The oldest sections of the "L" started operations in 1892, making it the second-oldest rapid transit system in the Americas, after New York City's elevated lines.