# Chicago Transit Authority Locations API

**Canonical:** https://apis.io/apis/chicago-transit-authority/chicago-transit-authority-locations-api/  
**Provider:** Chicago Transit Authority — https://apis.io/providers/chicago-transit-authority/  
**Base URL:** http://lapi.transitchicago.com/api/1.0  
**Documentation:** https://www.transitchicago.com/developers/traintracker/

Chicago Transit Authority Locations API is one of 11 APIs that [Chicago Transit Authority](https://apis.io/providers/chicago-transit-authority/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Locations. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

Train geolocation operations

## Machine-readable artifacts (7)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/chicago-transit-authority/refs/heads/main/openapi/chicago-transit-authority-locations-api-openapi.yml
- **Documentation** — https://www.transitchicago.com/developers/traintracker/
- **APIDocs** — https://www.transitchicago.com/developers/ttdocs/
- **APIKeyApplication** — https://www.transitchicago.com/developers/traintrackerapply/
- **TermsOfService** — https://www.transitchicago.com/developers/terms/
- **Spectral** — https://raw.githubusercontent.com/api-evangelist/chicago-transit-authority/refs/heads/main/spectral/chicago-transit-authority-spectral.yml
- **Documentation** — https://www.transitchicago.com/developers/bustracker/

## Other Chicago Transit Authority APIs (10)

- [CTA Customer Alerts API](https://apis.io/apis/chicago-transit-authority/customer-alerts-api/)
- [CTA GTFS Schedule Feed](https://apis.io/apis/chicago-transit-authority/gtfs-feed/)
- [Chicago Transit Authority Arrivals API](https://apis.io/apis/chicago-transit-authority/chicago-transit-authority-arrivals-api/)
- [Chicago Transit Authority Bulletins API](https://apis.io/apis/chicago-transit-authority/chicago-transit-authority-bulletins-api/)
- [Chicago Transit Authority Follow API](https://apis.io/apis/chicago-transit-authority/chicago-transit-authority-follow-api/)
- [Chicago Transit Authority Predictions API](https://apis.io/apis/chicago-transit-authority/chicago-transit-authority-predictions-api/)
- [Chicago Transit Authority Routes API](https://apis.io/apis/chicago-transit-authority/chicago-transit-authority-routes-api/)
- [Chicago Transit Authority Stops API](https://apis.io/apis/chicago-transit-authority/chicago-transit-authority-stops-api/)
- [Chicago Transit Authority System API](https://apis.io/apis/chicago-transit-authority/chicago-transit-authority-system-api/)
- [Chicago Transit Authority Vehicles API](https://apis.io/apis/chicago-transit-authority/chicago-transit-authority-vehicles-api/)

## Tags

Locations

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/chicago-transit-authority/chicago-transit-authority-locations-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/chicago-transit-authority/.