ITS Roadway Equipment --> Roadside Equipment:
vehicle signage local data

Definitions

vehicle signage local data (Information Flow): Information provided by adjacent field equipment to support in-vehicle signing of dynamic information that is currently being displayed to passing drivers. This includes the dynamic information (e.g., current signal states, grade crossing information, local traffic and road conditions, detours, advisories, parking availability, etc.) and control parameters that identify the desired timing, duration, and priority of the signage data.

ITS Roadway Equipment (Source Physical Object): 'ITS Roadway Equipment' represents the ITS equipment that is distributed on and along the roadway that monitors and controls traffic and monitors and manages the roadway itself. In CVRIA, this physical object represents all of the other ITS field equipment that interfaces with and supports the Connected Vehicle Roadside Equipment (RSE). This physical object includes traffic detectors, environmental sensors, traffic signals, highway advisory radios, dynamic message signs, CCTV cameras and video image processing systems, grade crossing warning systems, and ramp metering systems. Lane management systems and barrier systems that control access to transportation infrastructure such as roadways, bridges and tunnels are also included. This object also provides environmental monitoring including sensors that measure road conditions, surface weather, and vehicle emissions. Work zone systems including work zone surveillance, traffic control, driver warning, and work crew safety systems are also included.

Roadside Equipment (Destination 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.

Included In

This Information Flow is in the following Applications:

• Eco-Lanes Management
• Eco-Ramp Metering
• Eco-Speed Harmonization
• Intermittent Bus Lanes
• In-Vehicle Signage
• Low Emissions Zone Management
• Queue Warning
• Restricted Lane Warnings
• Speed Harmonization
• Stop Sign Gap Assist
• Variable Speed Limits for Weather-Responsive Traffic Management
• Warnings about Upcoming Work Zone

This Information Flow is in the following Application Objects:

• Roadway Traffic Gap Assist
• Roadway Traffic Information Dissemination
• Roadway Warning
• RSE Parking Management
• RSE Queue Warning
• RSE Traffic Gap Assist
• RSE Traveler Information Communications

Communication Diagrams

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This profile describes standards applicable to communications between roadside equipment and other field equipment such as traffic signal controllers that is represented by ITS Roadway Equipment in CVRIA.

Characteristics

Architectural:

Security

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