| Source Element | Destination Element | Flow |
|---|
| City of Niles Field Equipment | City of Niles Traffic Signal System | request for right-of-way |
| City of Niles Traffic Signal System | signal control status |
| City of Niles Traffic Signal System | City of Niles Field Equipment | signal control data |
| City of Warren Field Equipment | City of Warren Traffic Signal System | request for right-of-way |
| City of Warren Traffic Signal System | signal control status |
| City of Warren Traffic Signal System | City of Warren Field Equipment | signal control data |
| City of Youngstown Field Equipment | City of Youngstown Traffic Signal System | request for right-of-way |
| City of Youngstown Traffic Signal System | signal control status |
| City of Youngstown Traffic Signal System | City of Youngstown Field Equipment | signal control data |
| Mahoning County Field Equipment | Mahoning County Signal Control System | request for right-of-way |
| Mahoning County Signal Control System | signal control status |
| Mahoning County Signal Control System | Mahoning County Field Equipment | signal control data |
| ODOT District 4 Field Equipment | ODOT District 4 Signal Control System | request for right-of-way |
| ODOT District 4 Signal Control System | signal control status |
| ODOT District 4 Signal Control System | ODOT District 4 Field Equipment | signal control data |
| Other Municipality or Township Field Equipment | Other Municipality or Township Traffic Signal Systems | request for right-of-way |
| Other Municipality or Township Traffic Signal Systems | signal control status |
| Other Municipality or Township Traffic Signal Systems | Other Municipality or Township Field Equipment | signal control data |
| Trumbull County Field Equipment | Trumbull County Signal Control System | request for right-of-way |
| Trumbull County Signal Control System | signal control status |
| Trumbull County Signal Control System | Trumbull County Field Equipment | signal control data |