ITS Roadway Equipment --> Connected Vehicle Roadside Equipment:
environmental sensor data

Definitions

environmental sensor data (Information Flow): Current road conditions (e.g., surface temperature, subsurface temperature, moisture, icing, treatment status) and surface weather conditions (e.g., air temperature, wind speed, precipitation, visibility) as measured and reported by fixed and/or mobile environmental sensors. Operational status of the sensors is also included.

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. 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.

Connected Vehicle Roadside Equipment (Destination Physical Object): 'Connected Vehicle Roadside Equipment' (CV RSE) represents the Connected Vehicle roadside devices (i.e., Roadside Units (RSUs)) equipped with short range wireless (SRW) communications technology, as well as any other supporting equipment that leverage the RSU and are not described by other objects (e.g., a local roadside processor). CVRSE are used to send messages to, and receive messages from, nearby vehicles and personal devices equipped with compatible communications technology. 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 Triple is in the following Service Packages:

• CVO10: Road Weather Information for Freight Carriers
• VS05: Curve Speed Warning
• VS07: Road Weather Motorist Alert and Warning
• WX03: Spot Weather Impact Warning

This triple is associated with the following Functional Objects:

• Roadway Environmental Monitoring
• RSE Environmental Monitoring
• RSE Speed Warning

This Triple is described by the following Functional View Data Flows:

• environmental_data_for_vehicle_sensors
• environmental_sensor_data_for_roadside_safety

This Triple has the following triple relationships:

Communication Solutions

• US: NTCIP Environmental Sensors - SNMPv3/TLS (6)
• (None-Data) - Secure Internet (ITS) (43)
• Data for Distribution (TBD) - Apache Kafka (44)
• Data for Distribution (TBD) - OMG DDS (44)
• Data for Distribution (TBD) - OASIS MQTT (50)
• Data for Distribution (TBD) - OASIS AMQP (61)

Selected Solution

Data for Distribution (TBD) - Apache Kafka

Solution Description

ITS Application Entity Development needed			Click gap icons for more info.
Mgmt Apache Zookeeper	Facilities Apache Kafka Apache Zookeeper	Security IETF RFC 8446
	TransNet IP Alternatives IETF RFC 9293
	Access Internet Subnet Alternatives

Note that some layers might have alternatives, in which case all of the gap icons associated with every alternative may be shown on the diagram, but the solution severity calculations (and resulting ordering of solutions) includes only the issues associated with the default (i.e., best, least severe) alternative.

Characteristics

Security