Chicago Transit Authority
Overview
 
Chicago Transit Authority, also known as CTA, is the operator of mass transit
Public transport
Public transport is a shared passenger transportation service which is available for use by the general public, as distinct from modes such as taxicab, car pooling or hired buses which are not shared by strangers without private arrangement.Public transport modes include buses, trolleybuses, trams...

 within the City of Chicago
Chicago
Chicago is the largest city in the US state of Illinois. With nearly 2.7 million residents, it is the most populous city in the Midwestern United States and the third most populous in the US, after New York City and Los Angeles...

, Illinois
Illinois
Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...

 and some of its surrounding suburbs.

The CTA is a municipal corporation that started operations on October 1, 1947 upon the purchase and combination of the transportation assets of the Chicago Rapid Transit Company
Chicago Rapid Transit Company
The Chicago Rapid Transit Company was a privately owned firm providing rapid transit rail service in Chicago, Illinois and several adjacent communities between the years 1924 and 1947...

 and the Chicago Surface Lines
Chicago Surface Lines
The Chicago Surface Lines was operator of the street railway system of Chicago, Illinois, from the years 1913 to 1947. The firm is a predecessor of today's publicly owned operator, the Chicago Transit Authority.-History:...

 streetcar system. In 1952, CTA purchased the assets of the Chicago Motor Coach Company
Chicago Motor Coach Company
The Chicago Motor Coach Company was founded in 1917 by John D. Hertz to provide Chicago's first bus transportation services, primarily in places where streetcars were not able to travel. The company grew rapidly and was purchased by the Chicago Transit Authority in 1952.-History:John D. Hertz...

, which was under the control of Yellow Cab
Yellow Cab
There are many Yellow Cabs taxicab operators around the world . The original Yellow Cab Company, based in Chicago, Illinois is one of the largest taxicab companies in the United States.- History :...

 founder John D. Hertz
John D. Hertz
John Daniel Hertz, Sr. was an American businessman, thoroughbred racehorse owner, and philanthropist.-Biography:...

, resulting in a fully unified system.
 
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