Connected Vehicle Roadside Equipment --> ITS Roadway Equipment:
traffic situation data

Definitions

traffic situation data (Information Flow): Current, aggregate traffic data collected from connected vehicles that can be used to supplement or replace information collected by roadside traffic detectors. It includes raw and/or processed reported vehicle speeds, counts, and other derived measures. Raw and/or filtered vehicle control events may also be included to support incident detection.

Connected Vehicle Roadside Equipment (Source Physical Object): 'Connected Vehicle Roadside Equipment' (CV 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.

ITS Roadway Equipment (Destination 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.

Included In

This Triple is in the following Service Packages:

• MC07: Work Zone Safety Monitoring
• PS07: Incident Scene Safety Monitoring
• ST02: Eco-Traffic Signal Timing
• ST03: Eco-Traffic Metering
• ST04: Roadside Lighting
• TM04: Connected Vehicle Traffic Signal System
• TM21: Speed Harmonization
• VS06: Stop Sign Gap Assist
• VS08: Queue Warning
• VS15: Infrastructure Enhanced Cooperative Adaptive Cruise Control
• VS16: Automated Vehicle Operations

This triple is associated with the following Functional Objects:

• Roadway Basic Surveillance
• Roadway Incident Scene Safety
• Roadway Lighting System Control
• Roadway Traffic Gap Assist
• Roadway Work Zone Safety
• RSE Incident Scene Safety
• RSE Traffic Gap Assist
• RSE Traffic Monitoring
• RSE Work Zone Safety

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

• vehicle_speed_data_from_roadside
• vehicle_traffic_data_for_freeways
• vehicle_traffic_data_for_lanes
• vehicle_traffic_data_for_lighting
• vehicle_traffic_data_for_roads
• vehicle_traffic_data_from_roadside

This Triple has the following triple relationships:

Communication Solutions

• US: NTCIP Transportation Sensors - SNMPv3/TLS (11)
• (None-Data) - Secure Internet (ITS) (32)
• Data for Distribution (TBD) - Apache Kafka (36)
• Data for Distribution (TBD) - OMG DDS (36)
• Data for Distribution (TBD) - OASIS MQTT (42)
• Data for Distribution (TBD) - OASIS AMQP (45)

Selected Solution

Data for Distribution (TBD) - OASIS MQTT

Solution Description

ITS Application Entity Development needed			Click gap icons for more info.
Mgmt OASIS MQTT DMP	Facilities OASIS MQTT	Security IP Security Alternatives OASIS MQTT
	TransNet IP Alternatives Internet Transport Alternatives
	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