Transport for Chicago, US
FreeLiveLast verified 24 Sept 2026
Real-time CTA train and bus arrival predictions and service alerts for Chicago.
Example request
curl -s 'http://lapi.transitchicago.com/api/1.0/ttarrivals.aspx?key=$API_KEY&mapid=40360&max=5&outputType=JSON'
Free tier, in plain English
No cost to register; you apply for a free API key and get a default daily cap in the tens of thousands of requests.
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