| Source Element | Destination Element | Flow |
|---|
| ETHRA Demand-Response Vehicles | ETHRA Transit Dispatch Center | alarm notification |
| ETHRA Transit Dispatch Center | transit vehicle conditions |
| ETHRA Transit Dispatch Center | transit vehicle location data |
| ETHRA Transit Dispatch Center | transit vehicle schedule performance |
| ETHRA Fixed Route Vehicles | ETHRA Transit Dispatch Center | alarm notification |
| ETHRA Transit Dispatch Center | fare collection data |
| ETHRA Transit Dispatch Center | transit vehicle conditions |
| ETHRA Transit Dispatch Center | transit vehicle loading data |
| ETHRA Transit Dispatch Center | transit vehicle location data |
| ETHRA Transit Dispatch Center | transit vehicle schedule performance |
| ETHRA Transit Dispatch Center | ETHRA Demand-Response Vehicles | alarm acknowledge |
| ETHRA Demand-Response Vehicles | request for vehicle measures |
| ETHRA Demand-Response Vehicles | transit vehicle operator information |
| ETHRA Fixed Route Vehicles | alarm acknowledge |
| ETHRA Fixed Route Vehicles | fare management information |
| ETHRA Fixed Route Vehicles | request for vehicle measures |
| ETHRA Fixed Route Vehicles | transit schedule information |
| ETHRA Fixed Route Vehicles | transit traveler information |
| ETHRA Fixed Route Vehicles | transit vehicle operator information |
| ETHRA Transit Kiosks | transit fare information |
| ETHRA Transit Kiosks | transit traveler information |
| ETHRA Website | transit and fare schedules |
| First TN Human Resource Agency Dispatch Center | transit service coordination |
| Knoxville Area Transit Dispatch Center | transit service coordination |
| Private Transportation Providers | transit service coordination |
| Tennessee 511 System | transit and fare schedules |
| ETHRA Transit Kiosks | ETHRA Transit Dispatch Center | transit fare and passenger status |
| ETHRA Transit Dispatch Center | transit information user request |
| First TN Human Resource Agency Dispatch Center | ETHRA Transit Dispatch Center | transit service coordination |
| Knoxville Area Transit Dispatch Center | ETHRA Transit Dispatch Center | transit service coordination |
| Private Transportation Providers | ETHRA Transit Dispatch Center | transit service coordination |