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Wikipedia: Chicago Transit Authority, also known as CTA, is the operator of mass transit within the City of Chicago, Illinois and some of the suburbs. It is the second largest transit system in the United States and fourth largest in North America. The Chicago Transit Authority offers bus and rapid transit routes throughout the city, as well as to some suburban destinations.
![[A #147 CTA bus]](http://images.ookaboo.com/photo/s/CTA_147_bus_20110202_s.jpg "A #147 CTA bus")
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![[Downtown bus stop sign]](http://images.ookaboo.com/photo/s/CTA_Bus_Stop_s.jpg "Downtown bus stop sign")
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 from JeremyA |
from FotoPhest |
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