History

Horse car service began

Cable car service began

First electric streetcars

First rail line

Loop Elevated opened

First motor bus service

Trolley bus service began

State Street Subway opened

CTA became operating entity

Dearborn Subway opened

Last streetcar ran

Skokie Swift service began

Expressway median operation:

  - Congress (Eisenhower)

  - Dan Ryan

  - Kennedy

Rail service to O'Hare

Rail service to Midway

Rail line names switched to colors

Fare Cards introduced

Pink Line service began

Ventra fare system completed

                                                                                                                  Apr. 25, 1859

Jan. 28, 1882

Oct. 2, 1890

June 6, 1892

Oct. 12, 1897

Mar. 25, 1917

Apr. 17, 1930

Oct. 17, 1943

Oct. 1, 1947

Feb. 25, 1951

June 21, 1958

Apr. 20, 1964

June 22, 1958

Sept. 28, 1969

Feb. 1, 1970

Sept. 3, 1984

Oct. 31, 1993

Feb. 21, 1993

August 18, 1997

June 25, 2006

June 2014