The Regional Transportation Authority — Mapping & Statistics (RTAMS) is a web-based tool developed by the Regional Transportation Authority (RTA) for retrieving planning and financial information on the public transportation system in the RTA service area.

The RTA service area includes the transit services operated and maintained by the Chicago Transit Authority (CTA), Metra commuter rail, and Pace suburban bus. - Chicagoland's Transit Data Warehouse

Examples of data found on RTAMS:

Special interactive Mapping Applications are available for viewing: