| Source Element | Destination Element | Flow |
|---|
| Benton County Emergency Management | Richland Traffic Operations Center | emergency traffic control request |
| Franklin County Emergency Management | WSDOT SC Region TMC | emergency traffic control request |
| Kennewick Field Equipment | Kennewick Traffic Operations Center | right-of-way request notification |
| Kennewick Traffic Operations Center | Kennewick Field Equipment | signal control commands |
| Kennewick Field Equipment | signal control device configuration |
| Kennewick Field Equipment | signal control plans |
| Kennewick Field Equipment | signal system configuration |
| Local City Field Equipment | Local City Traffic Operations Center | right-of-way request notification |
| Local City Traffic Operations Center | Local City Field Equipment | signal control commands |
| Local City Field Equipment | signal control device configuration |
| Local City Field Equipment | signal control plans |
| Local City Field Equipment | signal system configuration |
| Mission Support Alliance Emergency Services | Mission Support Alliance Traffic Services | emergency traffic control request |
| Pasco Traffic Operations Center | emergency traffic control request |
| Richland Traffic Operations Center | emergency traffic control request |
| WSDOT SC Region TMC | emergency traffic control request |
| Mission Support Alliance Traffic Services | Mission Support Alliance Emergency Services | emergency traffic control information |
| Southeast Communications Center (SECOMM) | emergency traffic control information |
| WSP District 3 Communications Center | emergency traffic control information |
| Pasco Field Equipment | Pasco Traffic Operations Center | right-of-way request notification |
| Pasco Traffic Operations Center | Mission Support Alliance Emergency Services | emergency traffic control information |
| Pasco Field Equipment | signal control commands |
| Pasco Field Equipment | signal control device configuration |
| Pasco Field Equipment | signal control plans |
| Pasco Field Equipment | signal system configuration |
| Southeast Communications Center (SECOMM) | emergency traffic control information |
| Richland Field Equipment | Richland Traffic Operations Center | right-of-way request notification |
| Richland Traffic Operations Center | Mission Support Alliance Emergency Services | emergency traffic control information |
| Richland Field Equipment | signal control commands |
| Richland Field Equipment | signal control device configuration |
| Richland Field Equipment | signal control plans |
| Richland Field Equipment | signal system configuration |
| Southeast Communications Center (SECOMM) | emergency traffic control information |
| Southeast Communications Center (SECOMM) | Mission Support Alliance Traffic Services | emergency traffic control request |
| Pasco Traffic Operations Center | emergency traffic control request |
| Richland Traffic Operations Center | emergency traffic control request |
| West Richland Traffic Operations Center | emergency traffic control request |
| WSDOT SC Region TMC | emergency traffic control request |
| West Richland Field Equipment | West Richland Traffic Operations Center | right-of-way request notification |
| West Richland Traffic Operations Center | Southeast Communications Center (SECOMM) | emergency traffic control information |
| West Richland Field Equipment | signal control commands |
| West Richland Field Equipment | signal control device configuration |
| West Richland Field Equipment | signal control plans |
| West Richland Field Equipment | signal system configuration |
| WSDOT SC Region TMC | Mission Support Alliance Emergency Services | emergency traffic control information |
| Southeast Communications Center (SECOMM) | emergency traffic control information |
| WSDOT Field Equipment | signal control commands |
| WSDOT Field Equipment | signal control device configuration |
| WSDOT Field Equipment | signal control plans |
| WSDOT Field Equipment | signal system configuration |
| WSP District 3 Communications Center | emergency traffic control information |
| WSP District 3 Communications Center | Mission Support Alliance Traffic Services | emergency traffic control request |
| WSDOT SC Region TMC | emergency traffic control request |