We’re glad you’re interested in developing applications using data from CTA. This set of data offerings will be able to help you create interesting new applications and mash-ups that’ll help people get the information they want or need about CTA services, wherever they want to receive it.
The information provided through data feeds includes static schedule and service data using an open standard, and APIs that can get you up-to-the-minute information from both CTA Bus Tracker SM and CTA Train Tracker SM. We also have a Customer Alerts API that is a feed of both planned and unplanned events that affect service, as published on transitchicago.com.
Send us feedback
We'll continually be working to improve the available tools and content, and we'd love to hear what you think. Drop us a line at firstname.lastname@example.org.
Apps for Metro Chicago Competition
Apps for Metro Chicago, Illinois is a new apps competition managed by the Metropolitan Chicago Information Center (MCIC), partnered with the City of Chicago, Cook County, the State of Illinois and the Chicago Metropolitan Agency for Planning (CMAP). Data published in the CTA Developer Center qualifies as "Competition Data." To learn more about how to participate in the competition, get help, and see complete rules, visit http://www.appsformetrochicago.com/.
Transit App Center
Looking for apps? Find them in the App Center!
Want your app listed? If you've developed an application (whether for mobile devices, on the Web or in a public space), tell us about it and we'll consider showcasing it.
- CTA Train Tracker API
Provides up-to-the-minute arrival predictions about trains on the CTA system via the CTA Train Tracker SM Beta service.
- CTA Bus Tracker API
Provides up-to-the-minute arrival predictions and location data about buses on the CTA system via the CTA Bus Tracker SM service.
- Customer Alerts API
Provides status and detailed information about events (both planned and unplanned) affecting service. This is a gateway into the customer alert database that helps to power transitchicago.com.
- General Transit Feed Specification (GTFS) Data
Open format spec used by hundreds of transit agencies to power transit directions in a variety of Web and transit apps, including Google Maps. Many agencies, such as CTA, also share it with the public.
- Do-It-Yourself Transit Info Display
This simple Web application makes it easy for you to show CTA bus and train arrival times, plus weather and service alert information, on a screen for all to see—in your lobby, in your shop, in a window... Anywhere that it might help people out!
- Open Data Sets (KML, CSVs, and more) (New!)
In addition to the feeds hosted in our Developer Center, CTA publishes data sets via the City of Chicago's data portal. Many of these sets (which include ridership reports, mapping shapefiles, and more) could prove useful in your projects.
- RSS Feeds
Simple feeds of information on service and news from CTA, as it becomes available on our Web site.
While we provide the data and maintain the sources, we’re not able to provide support directly in how to write your software. We do, however, provide some pointers and tips to help get you started. There are also some helpful resources online, which we're happy to point you to.
Further reading and help...