| Source Element | Destination Element | Flow |
|---|
| City of Elizabethton TOC | City of Elizabethton Traffic Signals | signal control commands |
| City of Elizabethton Traffic Signals | signal control device configuration |
| City of Elizabethton Traffic Signals | signal control plans |
| City of Elizabethton Traffic Signals | signal system configuration |
| City of Elizabethton Traffic Signals | City of Elizabethton TOC | signal control status |
| City of Elizabethton TOC | signal fault data |
| City of Johnson City Flood Detectors | City of Johnson City Flood Warning Beacons | roadway equipment coordination |
| City of Johnson City Flood Warning Beacons | City of Johnson City Flood Detectors | roadway equipment coordination |
| City of Johnson City Rail Notification System | City of Johnson City Traffic Signals | roadway equipment coordination |
| City of Johnson City TOC | City of Johnson City Traffic Signals | signal control commands |
| City of Johnson City Traffic Signals | signal control device configuration |
| City of Johnson City Traffic Signals | signal control plans |
| City of Johnson City Traffic Signals | signal system configuration |
| City of Johnson City Traffic Signals | City of Johnson City Rail Notification System | roadway equipment coordination |
| City of Johnson City TOC | signal control status |
| City of Johnson City TOC | signal fault data |
| Municipal Rail Notification System | Municipal Traffic Signals | roadway equipment coordination |
| Municipal TOC | Municipal Traffic Signals | signal control commands |
| Municipal Traffic Signals | signal control device configuration |
| Municipal Traffic Signals | signal control plans |
| Municipal Traffic Signals | signal system configuration |
| Municipal Traffic Signals | Municipal Rail Notification System | roadway equipment coordination |
| Municipal TOC | signal control status |
| Municipal TOC | signal fault data |
| TDOT DMS | TDOT Wrong-Way Detection and Warning Equipment | roadway equipment coordination |
| TDOT Wrong-Way Detection and Warning Equipment | TDOT DMS | roadway equipment coordination |