intersection status (Information Flow): Current signal phase and timing information for all lanes at a signalized intersection. This flow identifies active lanes and lanes that are being stopped and specifies the length of time that the current state will persist for each lane. It also identifies signal priority and preemption status and pedestrian crossing status information where applicable.
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.
This Triple is in the following Service Packages:
- ST08: Eco-Approach and Departure at Signalized Intersections
- TM04: Connected Vehicle Traffic Signal System
- VS12: Vulnerable Road User Safety
- VS13: Intersection Safety Warning and Collision Avoidance
- VS15: Infrastructure Enhanced Cooperative Adaptive Cruise Control
This Triple is described by the following Functional View Functional Objects:
- RSE Intersection Management
- RSE Intersection Safety
- Vehicle Eco-Driving Assist
- Vehicle Intersection Warning
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
|intersection control status
- EU: Signal Control Messages - BTP/GeoNetworking/G5 (12)
- US: SAE Signal Control Messages - LTE-V2X WSMP (18)
- US: SAE Signal Control Messages - WAVE WSMP (20)
ITS Application Entity
CEN ISO 19091
ETSI 102 894-2
Click gap icons for more info.
ETSI 302 890-1
ETSI 103 301
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.
|This triple should be implemented consistently within the geopolitical region through which movement is essentially free (e.g., the United States, the European Union).
|Information Flow Security
|This data is intended for all vehicles in the immediate area of the sender.
|If this is compromised, the Vehicle OBE will receive messages that are inconsistent with what the traffic signals are displaying. This could lead to confusion and reduce the ability of the application to provide value.
|If this is down, the Vehicle OBE doesn't get the information it needs to stay in synch with the actual signal state, reducing or eliminating the value add from having this application. We assume that the Vehicle OBE will detect a lack of availability and choose not to send out-of-date information, so a failure of availability cannot have worse consequences than a failure of integrity which we have previously assessed at MEDIUM.