ftrf-vehicle_presence (Data Flow*)
This data flow represents the presence of a vehicle. This presence can be measured by a sensor, which allows the sensor to create an output that can be used to identify if a vehicle has been detected.Sub Data Flows
- Primitive Element
Parent Data Flows
Pspecs*
- 1.2.7.12-Control Roadway Warning System--In (rs)
- 9.3.4.1-Detect Work Zone Intrusion--In (rs)
- 9.3.4.3-Detect Work Zone Intrusion On-Board--In (mcvs)

