The "L", Chicago, USA

Chicago subway cars are the rail cars that make up the trains that operate on the "L" system, which is the elevated and underground subway system run by the Chicago Transit Authority (CTA) in Chicago, Illinois. The exterior of the subway cars is typically painted in the CTA's signature colors of blue and white, with the CTA logo and other identifying markings prominently displayed. The L system consists of both elevated and underground tracks, with the elevated tracks offering the most sweeping views of the city.