| Functional Requirements: |
Collect Traffic Surveillance
- The center shall monitor, analyze, and store traffic sensor data (speed, volume, occupancy) collected from field elements under remote control of the center.
- The center shall monitor, analyze, and distribute traffic images from CCTV systems under remote control of the center.
- The center shall respond to control data from center personnel regarding sensor and surveillance data collection, analysis, storage, and distribution.
- The center shall maintain a database of surveillance equipment and sensors and associated data (including the roadway on which they are located, the type of data collected, and the ownership of each )
TMC Incident Detection
- The center shall receive inputs from the Alerting and Advisory System concerning the possibility or occurrence of severe weather, terrorist activity, or other major emergency, including information provided by the Emergency Alert System.
- The center shall receive inputs concerning upcoming events that would effect the traffic network from event promoters and traveler information service providers.
- The center shall exchange incident and threat information with emergency management centers as well as maintenance and construction centers; including notification of existence of incident and expected severity, location, time and nature of incident.
- The center shall provide road network conditions and traffic images to emergency management centers to support the detection, verification, and classification of incidents.
- The center shall provide video and traffic sensor control commands to the field equipment to detect and verify incidents.
TMC In-Vehicle Signing Management
- The center shall format and output variable sign information such as traffic and road conditions to field equipment that supports in-vehicle signage communications.
- The center shall format and output advisory information, such as detour information, wide-area alerts, work zone intrusion information, and other special information to field equipment that supports in-vehicle signage communications.
TMC Regional Traffic Management
- The center shall exchange traffic information with other traffic management centers including incident information, congestion data, traffic data, signal timing plans, and real-time signal control information.
- The center shall exchange traffic control information with other traffic management centers to support remote monitoring and control of traffic management devices (e.g. signs, sensors, signals, cameras, etc.).
TMC Environmental Monitoring
- The center shall remotely control environmental sensors that measure road surface temperature, moisture, icing, salinity, and other measures.
- The center shall remotely control environmental sensors that measure weather conditions including temperature, wind, humidity, precipitation, and visibility.
- The center shall assimilate current and forecast road conditions and surface weather information using a combination of weather service provider information (such as the National Weather Service and value-added sector specific meteorological services), data from roadway maintenance operations, and environmental data collected from sensors deployed on and about the roadway.
TMC Traffic Information Dissemination
- The center shall remotely control dynamic messages signs for dissemination of traffic and other information to drivers.
- The center shall collect operational status for the driver information systems equipment (DMS, HAR, etc.).
Traffic Equipment Maintenance
- The center shall collect and store sensor (traffic, pedestrian, multimodal crossing) operational status.
- The center shall collect and store CCTV surveillance system (traffic, pedestrian) operational status.
TMC Work Zone Traffic Management
- The center shall receive work zone images from a maintenance center.
- The center shall remotely control driver information systems (such as dynamic messages signs, highway advisory radios) to advise drivers of activity around a work zone.
TMC Roadway Warning
- The center shall monitor data on traffic, environmental conditions, and other hazards collected from sensors along the roadway.
- The center shall identify hazardous road weather and surface conditions.
- The center shall identify debris, animals, or other encroachment on the roadway dangerous to approaching motorists.
- The center shall issue control commands to field equipment warning drivers approaching the identified hazardous conditions.
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