| Source Element | Destination Element | Flow |
|---|
| Chicago Transit Authority ATSS System | Regional Transportation Authority Travel Information Center (TIC) | transit schedule adherence information |
|---|
| RTA Transit Hub | transit schedule adherence information |
| Chicago Transit Authority Control Center | Regional Transportation Authority Travel Information Center (TIC) | transit schedule adherence information |
|---|
| RTA Transit Hub | transit schedule adherence information |
| Metra GPS Center (TIMS) | RTA Transit Hub | transit schedule adherence information |
|---|
| Metra Passenger Information Display System | RTA Transit Hub | transit schedule adherence information |
|---|
| Pace Control Center (IBS) | Regional Transportation Authority Travel Information Center (TIC) | transit schedule adherence information |
|---|
| Regional Transportation Authority Travel Information Center (TIC) | City of Chicago DOT Transportation Website | transit schedule adherence information |
|---|