| Source Element | Destination Element | Flow |
|---|
| Chicago Transit Authority ATSS System | RTA Transit Hub | transit and fare schedules |
|---|
| Chicago Transit Authority Bus Info System | RTA Transit Hub | transit and fare schedules |
|---|
| Chicago Transit Authority Control Center | Chicago Transit Authority Bus Tracker Website | transit and fare schedules |
|---|
| Regional Transportation Authority Travel Information Center (TIC) | transit and fare schedules |
| RTA Transit Hub | transit and fare schedules |
| Metra Consolidated Control Facility | IDOT District 1 Traffic Systems Center (TSC) | transit and fare schedules |
|---|
| RTA Transit Hub | transit and fare schedules |
| Metra GPS Center (TIMS) | RTA Transit Hub | transit and fare schedules |
|---|
| Metra Passenger Information Display System | RTA Transit Hub | transit and fare schedules |
|---|
| Pace Control Center (IBS) | Regional Transportation Authority Travel Information Center (TIC) | transit and fare schedules |
|---|
| RTA Transit Hub | transit and fare schedules |
| Pace Regional Paratransit Dispatch | RTA Transit Hub | transit and fare schedules |
|---|
| Private Bus Dispatch | RTA Transit Hub | transit and fare schedules |
|---|
| Regional Transportation Authority Travel Information Center (TIC) | City of Chicago DOT Transportation Website | transit and fare schedules |
|---|
| RTA Transit Hub | Pace Regional Ridesharing and Vanpooling | transit and fare schedules |
|---|
| Private ISPs – Travel Information Services | transit and fare schedules |
| Regional Transportation Authority Travel Information Center (TIC) | transit and fare schedules |