| Source Element | Destination Element | Flow |
|---|---|---|
| Arterial Roadside Equipment | Arterial Traffic Control Systems | environmental sensor data |
| Arterial Traffic Control Systems | Arterial Roadside Equipment | environmental sensors control |
| Caltrans Regional TMCs | Caltrans TMC Roadside Equipment | environmental sensors control |
| Caltrans TMC Roadside Equipment | Caltrans Regional TMCs | environmental sensor data |