1.6.1.2.6: Maintain Device State

This process is responsible for managing and selecting the appropriate device control state messages. This process collects the device state messages that are produced by the other Activate HRI Device Controls processes and forwards the appropriate signals to the Detect Roadway Events process that monitors the status of the HRI commands being processed. This information is also used in the equipment diagnostic monitoring and testing.

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

This process is associated with the following functional objects:

• Roadway Standard Rail Crossing
• Roadway Transit Signal Control

This process is associated with the following data flows:

• barrier_device_control_state
• hsr_device_control_state
• ssr_device_control_state
• traffic_device_control_state
• device_control_state