1.2.7.16: Process Signal Control Conflict Monitoring

This process is responsible for monitoring data within a signal controller to determine if the states (red, yellow, green signals) being transmitted to either direction are in conflict with one another. If a conflict is detected this process shall set the signals to go into a safety mode - all sides flash yellow. This process shall monitor incoming data from connected vehicle roadside equipment for indications of a conflict between the Signal Phase and Timing (SPaT) messages and the lights actually being displayed. In the case of a conflict this process shall notify the process controlling the signals to go into a safe mode (flashing yellow) and to stop transmitting SPaT messages.

This process is associated with the ITS Roadway Equipment physical object.

This process is associated with the following functional objects:

• Roadway Basic Surveillance
• Roadway Environmental Monitoring
• Roadway Mixed Use Crossing Safety
• Roadway Signal Control

This process is associated with the following data flows:

• conflict_monitor_detection
• roadside_signal_monitoring