Roadside Equipment --> Traffic Management Center:
environmental situation data

Definitions

environmental situation data (Information Flow): Aggregated and filtered vehicle environmental data collected from vehicle safety and convenience systems including measured air temperature, exterior light status, wiper status, sun sensor status, rain sensor status, traction control status, anti-lock brake status, and other collected vehicle system status and sensor information. This information flow represents the aggregated and filtered environmental data sets that are provided by the RSE to the back office center. Depending on the RSE configuration and implementation, the data set may also include environmental sensor station data collected by the RSE.

Roadside Equipment (Source Physical Object): 'Roadside Equipment' (RSE) represents the Connected Vehicle roadside devices that are used to send messages to, and receive messages from, nearby vehicles using Dedicated Short Range Communications (DSRC) or other alternative wireless communications technologies. Communications with adjacent field equipment and back office centers that monitor and control the RSE are also supported. This device operates from a fixed position and may be permanently deployed or a portable device that is located temporarily in the vicinity of a traffic incident, road construction, or a special event. It includes a processor, data storage, and communications capabilities that support secure communications with passing vehicles, other field equipment, and centers.

Traffic Management Center (Destination Physical Object): The 'Traffic Management Center' 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. It communicates with ITS Roadway Equipment and Connected Vehicle Roadside Equipment (RSE) to monitor and manage traffic flow and monitor the condition of the roadway, surrounding environmental conditions, and field equipment status. It manages traffic and transportation resources to support allied agencies in responding to, and recovering from, incidents ranging from minor traffic incidents through major disasters.

Included In

This Information Flow is in the following Applications:

• Cooperative Adaptive Cruise Control
• Eco-Cooperative Adaptive Cruise Control
• Eco-Ramp Metering
• Eco-Speed Harmonization
• Eco-Traffic Signal Timing
• Intelligent Traffic Signal System
• Queue Warning
• Road Weather Information and Routing Support for Emergency Responders
• Road Weather Information for Freight Carriers
• Roadside Lighting
• Speed Harmonization
• Spot Weather Impact Warning
• Variable Speed Limits for Weather-Responsive Traffic Management

This Information Flow is in the following Application Objects:

• RSE Environmental Monitoring
• RSE Lighting System Support
• TMC Environmental Monitoring
• TMC Lighting System Control
• TMC Variable Speed Limits

Communication Diagrams

The communication diagram(s) can be viewed in SVG or PNG format and the current format is SVG. Switch to SVG format. PNG format.

This profile describes applicable standards for Center to Field communications with RSEs. Common internet standards (HTTPS and TCP) are used in this profile.

Characteristics

Architectural:

Security

This information flow triple is in the following applications with the following security levels.