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.
Personal Information Device (Destination Physical Object): The 'Personal Information Device' provides the capability for travelers to receive formatted traveler information wherever they are. Capabilities include traveler information, trip planning, and route guidance. Frequently a smart phone, the Personal Information Device provides travelers with the capability to receive route planning and other personally focused transportation services from the infrastructure in the field, at home, at work, or while en-route. Personal Information Devices may operate independently or may be linked with vehicle on-board equipment. This subsystem also supports safety related services with the capability to broadcast safety messages and initiate a distress signal or request for help.
This Triple is in the following Service Packages:
This Triple is described by the following Functional View Functional Objects:
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.
|info needs to be accurate and should not be tampered so the vehicle OBE has correct SPaT info for all lanes; however the driver can still see the traffic signals. From NYC: This information will be used by the vehicle ASD to determine whether or not to issue a red light violation warning to the driver. False information could lead to the vehicle ASD not issuing a warning when in fact it should have. The vehicle operator is not using this information to decide whether or not to travel through the intersection. They will still have visual cues, such as traffic lights, indicating whether or not they can travel through the intersection.
|needs to be available so the vehicle OBE has correct SPaT info; identifies signal priority and preemption status and pedestrian crossing status information, etc. However availability cannot be guaranteed over a wireless medium. From NYC: Without this information, vehicle ASD may not properly issue a red light violation warning to the driver. The vehicle operator will still use the traffic