Chicago Transit Authority (English Wikipedia)

Hilkevitch, Jon (March 20, 2013). "CTA's Ventra debit option rife with fees". Red Eye Chicago. Chicago: Tribune Publishing. Archived from the original on April 11, 2013. Retrieved March 20, 2013.

busdrawings.com

"Harry Gershen photograph at busdrawings.com".

chicagocurrent.com

Ben Meyerson (December 16, 2009). "Bus bunching down 40% since 2007, CTA report says". Chicago Current. Archived from the original on May 25, 2011. Retrieved December 17, 2009.

chicagotribune.com

Hilkevitch, Jon. "CTA ridership jumps to highest level in 20 years". Chicago Tribune. Chicago: Tribune Publishing. Retrieved July 10, 2012.
Hilkevitch, Jon (October 29, 2014). "CTA testing 2 all-electric buses". Chicago Tribune. Retrieved June 14, 2015.

cityofchicago.org

data.cityofchicago.org

CTA - Ridership - Annual Boarding Totals (Report). Chicago: Chicago Department of Transportation. Retrieved April 4, 2021.
CTA - Ridership - Annual Boarding Totals (Report). Chicago: Chicago Department of Transportation. Retrieved January 8, 2014.

metroplanning.org

Mancini Nichols, Chrissy. "Talking Transit: Chicago transit gets open payment system" (Press release). Chicago: Metropolitan Planning Council. Retrieved March 20, 2013.

nbcchicago.com

Steve Bryant (December 14, 2009). "Bus Trackers Installed at Wicker Park Shops". NBC Chicago. Retrieved December 22, 2009.

ntsb.gov

Chicago Transit Authority Train Collides with Bumping Post and Escalator at O'Hare Station (PDF) (Report). Washington: National Transportation Safety Board. March 14, 2014. NTSB/RAR-15-01.

railwaygazette.com

"Chicago orders 300 more 5000-series metro cars". Railway Gazette International. July 20, 2011. Retrieved July 20, 2011.

redeyechicago.com

Hilkevitch, Jon (March 20, 2013). "CTA's Ventra debit option rife with fees". Red Eye Chicago. Chicago: Tribune Publishing. Archived from the original on April 11, 2013. Retrieved March 20, 2013.

suntimes.com

Thomas, Monifa (March 14, 2014). "Ventra cards become only way to pay starting July 1". Chicago Sun-Times. Chicago: Chicago Public Media. Retrieved March 14, 2014.

transitchicago.com

"News/Press Releases". Chicago: Chicago Transit Authority. Retrieved February 4, 2019.
"CTA Facts at a Glance". Chicago: Chicago Transit Authority. Retrieved October 20, 2014.
Most recent ridership information is provided in the President's, Budget, and Financial Reports on the Board Presentations page of CTA's website Archived April 1, 2018, at the Wayback Machine.
"Transitioning to Ventra" (Press release). Chicago: Chicago Transit Authority. Archived from the original on June 20, 2014. Retrieved June 14, 2014.
"Ventra". Chicago: Chicago Transit Authority. Retrieved October 18, 2013.
"Blue Line O'Hare Branch challenges—and what we're doing - Improvement projects". Chicago: Chicago Transit Authority.
"CTA to Begin In-Service Testing of New Rail Cars" (Press release). CTA. April 15, 2010. Retrieved April 16, 2010.
"CTA Security & Safety". CTA.
"Mayor Daley, CTA and CPD Officials Test Mobile Security Network" (Press release). CTA. December 2, 2006.
"CTA to Test Mobile Security Network to Enhance Safety on System" (Press release). CTA. March 16, 2006.
"Vandal Sentenced to Prison for Defacing CTA Property" (Press release). CTA. March 21, 2008.^{[permanent dead link]}
"CTA Vandal Receives Felony Conviction for Criminal Defacement and Trespass" (Press release). CTA. December 19, 2007.^{[permanent dead link]}
"Mayor Daley, CTA Launch Bus Tracking Pilot". CTA. Retrieved February 4, 2019.
"CTA Expands Bus Tracker Program". CTA. Retrieved February 4, 2019.
"Developer Center". CTA.
"CTA Bus Tracker Information Now Available On-Demand via New Text Messaging Feature" (Press release). CTA. December 22, 2009.
"Transit App Center". CTA. Archived from the original on May 16, 2010. Retrieved May 10, 2010.
"Online Gallery - Public Art on CTA". CTA.

ventrachicago.com

"Ventra FAQ". Chicago: Chicago Transit Authority. Retrieved October 18, 2013.
"How-To: Paying with Apple Pay, Android Pay or Samsung Pay". Chicago: Chicago Transit Authority. Retrieved December 10, 2018.

web.archive.org

Most recent ridership information is provided in the President's, Budget, and Financial Reports on the Board Presentations page of CTA's website Archived April 1, 2018, at the Wayback Machine.
"Transitioning to Ventra" (Press release). Chicago: Chicago Transit Authority. Archived from the original on June 20, 2014. Retrieved June 14, 2014.
Ben Meyerson (December 16, 2009). "Bus bunching down 40% since 2007, CTA report says". Chicago Current. Archived from the original on May 25, 2011. Retrieved December 17, 2009.
"Transit App Center". CTA. Archived from the original on May 16, 2010. Retrieved May 10, 2010.

yourcta.com

"Vandal Sentenced to Prison for Defacing CTA Property" (Press release). CTA. March 21, 2008.^{[permanent dead link]}
"CTA Vandal Receives Felony Conviction for Criminal Defacement and Trespass" (Press release). CTA. December 19, 2007.^{[permanent dead link]}

youtube.com

"Public Art on CTA - video". CTA.
"CTA Connections - YouTube". YouTube.