| Functional Requirements: |
Roadway Basic Surveillance
- The field element shall collect, process, digitize, and send traffic sensor data (speed, volume, and occupancy) to the center for further analysis and storage, under center control.
- The field element shall return sensor operational status to the controlling center.
- The field element shall return sensor fault data to the controlling center for repair.
- The field element shall return CCTV system fault data to the controlling center for repair.
Roadway Incident Detection
- The field element shall remotely process video data and provide an indication of potential incidents to the traffic management center.
- The field element shall provide operational status and fault data for the incident detection devices to the traffic management center.
Roadway Signal Controls
- The field element shall return traffic signal controller fault data to the maintenance center for repair.
- The field element shall control traffic signals at intersections and on main highways for urban and rural areas, under center control.
- The field element shall collect pedestrian images and pedestrian sensor data, and respond to pedestrian crossing requests via display, audio signal, or other manner.
- The field element shall provide the capability to notify the traffic management center that a pedestrian has requested right-of-way and when the request was or will be granted (request for right-of-way).
- The field element shall monitor operation of traffic signal controllers and report to the center any instances in which the indicator response does not match that expected from the indicator control information.
- The field element shall monitor operation of traffic signal controllers and report to the center any instances in which the indicator response does not match that expected from known indicator preemptions.
- The field element shall return traffic signal controller operational status to the controlling center.
Roadway Data Collection
- The field element shall collect traffic, road, and environmental conditions information.
- The field element shall include the sensors and supporting roadside devices that sense, collect, and send traffic, road, and environmental conditions information to a center for archival.
- The field element shall collect sensor status and sensor faults from roadside equipment and send it along with the recorded data to a center for archival.
|
