roadway dynamic signage data (Information Flow): Information used to initialize, configure, and control dynamic message signs. This flow can provide message content and delivery attributes, local message store maintenance requests, control mode commands, status queries, and all other commands and associated parameters that support remote management of these devices.
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.
This Triple is in the following Service Packages:
This Triple is described by the following Functional View Functional Objects:
- Roadway Dynamic Lane Management and Shoulder Use
- Roadway Multimodal Crossing Control
- Roadway Speed Monitoring and Warning
- Roadway Traffic Information Dissemination
- Roadway Work Zone Traffic Control
- RSE Traveler Information Communications
This Triple is described by the following Functional View Data Flows:
This Triple has the following triple relationships:
|ITS Roadway Equipment
|Connected Vehicle Roadside Equipment
|roadway dynamic signage status
- US: NTCIP Message Sign - SNMPv3/TLS (5)
- (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)
ITS Application Entity
Click gap icons for more info.
Bundle: SNMPv3 MIB
IETF RFC 6353
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.
|In cases where an interface is normally encapsulated by a single stakeholder, interoperability is still desirable, but the motive is vendor independence and the efficiencies and choices that an open standards-based interface provides.
|Information Flow Security
|Device control information should not be available, as those with criminal intent may use this information toward their own ends.
|Data is intended to feed dissemination channels, either C-ITS messages or DMS or other channels, so it should generally be correct as it is distributed widely and any forgery or corrupted data will have widespread impact.
|Occasional outages of this flow will delay dissemination of the data to travelers (the eventual end user) which could have significant impacts on travel, both safety and mobility impacts.