Chicago, Illinois -- Wednesday, June 27, 2018
Shaquille Wilson, 5, looks out the window as the Pink Line passes through Pilsen, a neighborhood on Chicago's west side on Wednesday, June 27, 2018. At right is Wilson's cousin Michael Wilson, 4.
With 8 lines stopping at 145 stations, the Chicago Transit Authority's train system -- colloquially known as the "L" -- is an essential lifeline for the city. Annually, about t238,645,800 riders use the system.
CREDIT: Alyssa Schukar for U.S. News & World Report