| Functional Requirements: |
Roadway Basic Surveillance
- The field element shall collect, digitize, and send multimodal crossing and high occupancy vehicle (HOV) lane sensor data to the center for further analysis and storage.
- The field element shall collect, process, and send traffic images to the center for further analysis and distribution.
- 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 and CCTV system fault data to the controlling center for repair.
- The field element shall return sensor and CCTV system operational status to the controlling center.
Roadway Probe Data Communications
- The field element shall aggregate and forward collected probe information to the center.
- The field element shall communicate with on-board equipment on passing vehicles to collect a history of precise positioning information that can be used to derive or verify accurate roadway geometry and lane features for use by map update providers.
- The field element shall communicate with on-board equipment on passing vehicles to collect current status information and a record of previous events (e.g., temperature, wiper status, headlight status, traction control system status) that can be used to d
- The field element shall communicate with on-board equipment on passing vehicles to collect current vehicle position, speed, and heading and a record of previous events (e.g., starts and stops, link travel times) that can be used to determine current traff
- The field element shall communicate with on-board equipment on passing vehicles to collect vehicle trip information (e.g., origin and destination information, travel times) that can be used to support transportation planning.
- The field element shall communicate with passing vehicles for traffic data link time calculations and send collected data to the controlling center; identification will be removed to ensure anonymity.
- The field element shall provide roadside equipment fault indication to the center for repair.
- The field element shall provide roadside equipment operational status to the center.
Roadway Equipment Coordination
- The field element shall include devices (such as arterial or freeway controllers, roadway automated treatment systems, barrier and safeguard systems, emissions or pollution systems, and work zone intrusion alert systems) that provide data and status infor
- The field element shall include devices (such as arterial or freeway controllers, roadway automated treatment systems, barrier and safeguard systems, emissions or pollution systems, and work zone intrusion alert systems) that receive control information f
- The field element shall include sensors (such as traffic, environmental, and work zone intrusion detection sensors) that provide data and status information to other field element devices (such as dynamic message signs, ramp meters, traffic signals, work
- The field element shall include sensors (such as traffic, environmental, and work zone intrusion detection sensors) that receive control information from other field element devices, without center control.
Roadway Work Zone Safety
- The field element shall include work zone intrusion alerting devices that alert crew workers of a work zone emergency or safety issue such as the intrusion of a vehicle into the work zone area or movement of field crew into the travel lanes.
- The field element shall include work zone intrusion alerting devices that alert drivers that they have intruded upon the perimeter of the work zone, or are about to do so; may provide alerts to drivers directly or via in-vehicle signing.
- The field element shall include work zone intrusion alerting devices that notify crew via maintenance vehicles of a work zone emergency or safety issue such as the intrusion of a vehicle into the work zone area or movement of field crew into the travel la
- The field element shall include work zone intrusion detection devices that detect when a vehicle has intruded upon the boundary of a work zone, under center control.
- The field element shall include work zone intrusion detection devices that detect when crew workers have crossed the boundary between the work zone and vehicle traffic, under center control.
- The field element shall provide fault data for the work zone intrusion alerting devices to the maintenance center for repair.
- The field element shall provide fault data for the work zone intrusion detection devices to the maintenance center for repair.
- The field element shall provide operational status for the work zone intrusion alerting devices to the maintenance center.
- The field element shall provide operational status for the work zone intrusion detection devices to the maintenance center.
Roadway Field Device Monitoring
- The field element shall include a local interface that allows field personnel to command diagnostic tests on connected field equipment.
- 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 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
- The field element shall send collected fault data to the maintenance center for repair.
- The field element shall send operational status of connected field equipment to the maintenance center.
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