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9.3.3.1 - Collect Vehicle Speed
This process shall be responsible for collecting the speed of individual vehicles as they enter or pass through a work zone. The process shall accept inputs to control the speed monitoring device and return data and operational status (state of the sensor device, configuration, and fault data) to the controlling process, and to another process for repair if deemed necessary. The process shall pass the speed measurement onto other roadside devices for display to drivers, or provide individual speed information to another process for speed enforcement. The process shall receive safe speed threshold parameters based on environmental conditions and vehicle characteristics, and send a safe speed advisory to another process for display to drivers if the threshold has been exceeded. The process shall aggregate speed data to provide periodic logs of the vehicle speed.
This PSpec is associated with the following Subsystem: Roadway Subsystem
This PSpec is associated with the following Equipment Packages:
Data Flows:
- fea-speed_sensor_control -- In
- From_Vehicle_Characteristics -- In
- individual_vehicle_speed -- Out
- individual_vehicle_speed_for_display -- Out
- individual_vehicle_speed_for_signage -- Out
- speed_sensor_control_from_m_and_c -- In
- speed_sensor_control_from_traffic -- In
- speed_sensor_equip_status_for_m_and_c -- Out
- speed_sensor_log_for_m_and_c -- Out
- speed_sensor_log_for_traffic -- Out
- speed_sensor_status -- Out
- speed_sensor_status_for_m_and_c -- Out
- speed_warning_for_display -- Out
- speed_warning_for_signage -- Out
- t_other_rw_individual_vehicle_speed_to_dms -- Out
- t_other_rw_individual_vehicle_speed_to_signage -- Out
- t_other_rw_speed_warning_to_dms -- Out
- t_other_rw_speed_warning_to_signage -- Out
- tea-speed_sensor_status -- Out
