NMDOT Statewide TMC - Traffic Management Functionality
Subsystem Description
The Traffic Management Subsystem monitors and controls traffic and the road network. It represents centers that manage a broad range of transportation facilities including freeway systems, rural and suburban highway systems, and urban and suburban traffic control systems. This subsystem communicates with the Roadway Subsystem to monitor and manage traffic flow and monitor the condition of the roadway, surrounding environmental conditions, and field equipment status. This subsystem coordinates with the Maintenance and Construction Management Subsystem to maintain the road network and coordinate and adapt to maintenance activities, closures, and detours. Incidents are detected, verified, and incident information is provided to allied agencies, drivers (through Roadway Subsystem highway advisory radio and dynamic message signs), and information service providers. This subsystem also manages traffic and transportation resources to support allied agencies in responding to, and recovering from, incidents ranging from minor traffic incidents through major disasters. When required, special traffic management strategies are implemented to support evacuation and reentry. The Traffic Management Subsystem supports HOV lane management and coordination, road pricing, and other demand management policies that can alleviate congestion and influence mode selection. It also manages reversible lane facilities and barrier and safeguard systems that control access to transportation infrastructure. The subsystem communicates with other Traffic Management Subsystems to coordinate traffic information and control strategies in neighboring jurisdictions. It also coordinates with rail operations to support safer and more efficient highway traffic management at highway-rail intersections. Finally, the Traffic Management Subsystem provides the capabilities to exercise control over those devices utilized for automated highway system (AHS) traffic and vehicle control.
Functional Area: Collect Traffic Surveillance
Management of traffic sensors and surveillance (CCTV) equipment, collection of current traffic conditions, and distribution of the collected information to other centers and operators.
| ID | Requirement | Status |
|---|---|---|
| 1 | The center shall monitor, analyze, and store traffic sensor data (speed, volume, occupancy) collected from field elements under remote control of the center. | Planned |
| 2 | The center shall monitor, analyze, and distribute traffic images from CCTV systems under remote control of the center. | Planned |
| 4 | The center shall distribute road network conditions data (raw or processed) based on collected and analyzed traffic sensor and surveillance data to other centers. | Planned |
| 5 | The center shall respond to control data from center personnel regarding sensor and surveillance data collection, analysis, storage, and distribution. | Planned |
| 6 | The center shall maintain a database of surveillance and sensors and the freeways, surface street and rural roadways, e.g. where they are located, to which part(s) of the network their data applies, the type of data, and the ownership of each link (that is, the agency or entity responsible for collecting and storing surveillance of the link) in the network. | Planned |
| 7 | The center shall support an interface with a map update provider, or other appropriate data sources, through which updates of digitized map data can be obtained and used as a background for traffic data. | Planned |
Functional Area: TMC Environmental Monitoring
Management of environmental sensors and assimilation of collected data with other current and forecast road conditions and surface weather information from weather service providers and roadway maintenance operations.
| ID | Requirement | Status |
|---|---|---|
| 1 | The center shall remotely control environmental sensors that measure road surface temperature, moisture, icing, salinity, and other measures. | Planned |
| 2 | The center shall remotely control environmental sensors that measure weather conditions including temperature, wind, humidity, precipitation, and visibility. | Planned |
| 3 | 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. | Planned |
| 4 | The center shall provide weather and road condition information to weather service providers and center personnel. | Planned |
Functional Area: TMC Freeway Management
Remotely controls ramp meters, interchange connector meters, lane control signals, mainline meters, and variable speed control systems.
| ID | Requirement | Status |
|---|---|---|
| 1 | The center shall remotely control systems to manage use of the freeways, including ramp meters, mainline metering, and lane controls. | Planned |
| 2 | The center shall collect operational status from ramp meters, mainline metering, and lane controls and compare against the control information sent by the center. | Planned |
| 3 | The center shall collect fault data from ramp meters, mainline metering, and lane controls. | Planned |
| 4 | The center shall implement control strategies, under control of center personnel, on some or all of the freeway network devices (e.g. ramp meters, mainline metering, and lane controls), based on data from sensors monitoring traffic conditions upstream, downstream, and queue data on the ramps themselves. | Planned |
Functional Area: TMC Regional Traffic Management
Coordination between traffic management centers in order to share traffic information between centers as well as control of traffic management field equipment. This may be used during incidents and special events and during day-to-day operations.
| ID | Requirement | Status |
|---|---|---|
| 1 | 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. | Planned |
Functional Area: TMC Traffic Information Dissemination
Controls dissemination of traffic-related data to other centers, the media, and travelers via the driver information systems (DMS, HAR) that it operates.
| ID | Requirement | Status |
|---|---|---|
| 1 | The center shall remotely control dynamic messages signs for dissemination of traffic and other information to drivers. | Planned |
| 2 | The center shall remotely control driver information systems that communicate directly from a center to the vehicle radio (such as Highway Advisory Radios) for dissemination of traffic and other information to drivers. | Planned |
| 3 | The center shall collect operational status for the driver information systems equipment (DMS, HAR, etc.). | Planned |
| 4 | The center shall collect fault data for the driver information systems equipment (DMS, HAR, etc.) for repair. | Planned |
| 5 | The center shall retrieve locally stored traffic information, including current and forecasted traffic information, road and weather conditions, traffic incident information, information on diversions and alternate routes, closures, and special traffic restrictions (lane/shoulder use, weight restrictions, width restrictions, HOV requirements), and the definition of the road network itself. | Planned |
| 6 | The center shall distribute traffic data to maintenance and construction centers, transit centers, emergency management centers, and traveler information providers. | Planned |
| 8 | The center shall provide the capability for center personnel to control the nature of the data that is available to non-traffic operations centers and the media. | Planned |
Functional Area: Traffic Maintenance
Monitoring and remote diagnostics of field equipment - detect failures, issue problem reports, and track the repair or replacement of the failed equipment.
| ID | Requirement | Status |
|---|---|---|
| 1 | The center shall collect and store sensor (traffic, pedestrian, multimodal crossing) operational status. | Planned |
| 2 | The center shall collect and store CCTV surveillance system (traffic, pedestrian) operational status. | Planned |
| 3 | The center shall collect and store sensor (traffic, pedestrian, multimodal crossing) fault data and send to the maintenance center for repair. | Planned |
| 4 | The center shall collect and store CCTV surveillance system (traffic, pedestrian) fault data send to the maintenance center for repair. | Planned |
| 5 | The center shall collect environmental sensor operational status. | Planned |
| 6 | The center shall collect environmental sensor equipment fault data and send to the maintenance center for repair. | Planned |
| 7 | The center shall exchange data with maintenance centers concerning the reporting of faulty equipment and the schedule/status of their repair. Information exchanged includes details of new equipment faults, and clearances when the faults are cleared. | Planned |