Connected Vehicle Roadside Equipment --> Vehicle:
vehicle signage data

Definition
Included In
Communication Solutions
Characteristics
Security

Definitions

vehicle signage data (Information Flow): In-vehicle signing data that augments regulatory, warning, and informational road signs and signals. The information provided would include static sign information (e.g., stop, curve warning, guide signs, service signs, and directional signs) and dynamic information (e.g., local traffic and road conditions, restrictions, vehicle requirements, work zones, detours, closures, advisories, and warnings).

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.

Vehicle (Destination Physical Object): This 'Vehicle' physical object is used to model core capabilities that are common to more than one type of Vehicle. It provides the vehicle-based general sensory, processing, storage, and communications functions that support efficient, safe, and convenient travel. Many of these capabilities (e.g., see the Vehicle Safety service packages) apply to all vehicle types including personal vehicles, commercial vehicles, emergency vehicles, transit vehicles, and maintenance vehicles. From this perspective, the Vehicle includes the common interfaces and functions that apply to all motorized vehicles. The radio(s) supporting V2V and V2I communications are a key component of the Vehicle. Both one-way and two-way communications options support a spectrum of information services from basic broadcast to advanced personalized information services. Advanced sensors, processors, enhanced driver interfaces, and actuators complement the driver information services so that, in addition to making informed mode and route selections, the driver travels these routes in a safer and more consistent manner. This physical object supports all six levels of driving automation as defined in SAE J3016. Initial collision avoidance functions provide 'vigilant co-pilot' driver warning capabilities. More advanced functions assume limited control of the vehicle to maintain lane position and safe headways. In the most advanced implementations, this Physical Object supports full automation of all aspects of the driving task, aided by communications with other vehicles in the vicinity and in coordination with supporting infrastructure subsystems.

Included In

This Triple is in the following Service Packages:

This triple is associated with the following Functional Objects:

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

This Triple has the following triple relationships:

Relationship	Source	Destination	Flow
Depends On	ITS Roadway Equipment	Connected Vehicle Roadside Equipment	incident scene warning notification
Depends On	ITS Roadway Equipment	Connected Vehicle Roadside Equipment	vehicle signage local data
Depends On	ITS Roadway Equipment	Connected Vehicle Roadside Equipment	work zone warning notification
Depends On	Traffic Management Center	Connected Vehicle Roadside Equipment	vehicle signage application info
Depends On	Transit Vehicle OBE	Connected Vehicle Roadside Equipment	vehicle path prediction

Communication Solutions

EU: DEN Service - BTP/GeoNetworking/G5 (16)
US: SAE Traveler Info - LTE-V2X WSMP (21)
US: SAE Traveler Info - WAVE WSMP (23)
EU: In-Vehicle Information - BTP/GeoNetworking/G5 (27)
TPEG2 - BTP/GeoNetworking/G5 (27)

Solutions are sorted in ascending Gap Severity order. The Gap Severity is the parenthetical number at the end of the solution.

Selected Solution

US: SAE Traveler Info - WAVE WSMP

Solution Description

This solution is used within the U.S.. It combines standards associated with US: SAE Traveler Info with those for V-X: WAVE WSMP. The US: SAE Traveler Info standards include upper-layer standards required to implement V2X traveler information flows. The V-X: WAVE WSMP standards include lower-layer standards that support connectionless, near constant, ultra-low latency vehicle-to-any communications within ~300m using the WAVE Short Messaging Protocol (WSMP) over IEEE WAVE in the 5.9GHz spectrum. The broadcast mode is interoperable with M5 FNTP.

ITS Application Entity SAE J2735 SAE J2945/4			Click gap icons for more info.
Mgmt Addressed Elsewhere	Facilities SAE J2945	Security Bundle: IEEE 1609.2
	TransNet IEEE 1609.3
	Access Bundle: WAVE - Subnet

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

Characteristic	Value
Time Context	Recent
Spatial Context	Adjacent
Acknowledgement	False
Cardinality	Broadcast
Initiator	Source
Authenticable	True
Encrypt	False

Interoperability	Description
National	This triple should be implemented consistently within the geopolitical region through which movement is essentially free (e.g., the United States, the European Union).

Security

Information Flow Security
	Confidentiality	Integrity	Availability
Rating	Low	Moderate	Moderate
Basis	This data is intentionally transmitted to everyone via a broadcast. It is meant to augment other signage data, and by definition is meant to be shared with everyone.	These signs are meant to augment other visual cues to the driver. They should be accurate, but any inaccuracies should be corrected for by other means.	These notifications are helpful to a driver, but if the driver does not receive this notification immediately, there should still be other visual cues.

Security Characteristics	Value
Authenticable	True
Encrypt	False

Connected Vehicle Roadside Equipment --> Vehicle:vehicle signage data