| Functional Requirements: |
Roadway Environmental Monitoring
- The field element shall include surface and sub-surface environmental sensors that measure road surface temperature, moisture, icing, salinity, and other measures.
- The field element shall include environmental sensors that measure weather conditions including temperature, wind, humidity, precipitation, and visibility.
- The field element's environmental sensors shall be remotely controlled by a maintenance center.
- The field element shall provide environmental sensor equipment operational status to the controlling center or maintenance vehicle.
- The field element shall provide environmental sensor equipment fault indication to the controlling center or maintenance vehicle.
- The field element shall provide weather and road surface condition data to centers.
Roadway Reversible Lanes
- The field element shall monitor traffic in reversible lanes, including wrong-way vehicles, using sensors and surveillance equipment under center control.
- The field element shall include automated reversible lane equipment and driver information systems (such as lane control signals) that control traffic in reversible lanes on surface streets, under center control.
- The field element shall include automated reversible lane equipment and driver information systems (such as lane control signals) that control traffic in reversible lanes on freeways, under center control.
- The field element shall provide operational status for the reversible lane field equipment to the center.
- The field element shall provide fault data for the reversible lane field equipment to the 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.
Roadway Field Device Monitoring
- The field element shall monitor the operational status (state of the device, configuration, and fault data) of connected sensors (such as traffic, infrastructure, environmental, security, speed) and devices (such as highway advisory radio, dynamic message signs, automated roadway treatment systems, barrier and safeguard systems, cameras, traffic signals, ramp meters, short range communications equipment, security surveillance equipment).
- The field element shall send operational status of connected field equipment to the maintenance center.
- The field element shall send collected fault data to the maintenance center for repair.
- The field element shall include a local interface that provides operational status and fault data for connected field equipment to field personnel.
- The field element shall include a local interface that allows field personnel to command diagnostic tests on connected field equipment.
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