Link Type: Short Range Wireless
Connected Vehicle Roadside Equipment --> Maint and Constr Vehicle OBE:
intersection status
Definitions
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.
Maint and Constr Vehicle OBE (Destination Physical Object): The 'Maint and Constr Vehicle OBE' resides in a maintenance, construction, or other specialized service vehicle or equipment and provides the processing, storage, and communications functions necessary to support highway maintenance and construction. All types of maintenance and construction vehicles are covered, including heavy equipment, supervisory vehicles, unmanned remote controlled field maintenance robots, and sensory platforms that may be wheeled or low altitude aerial vehicles (e.g. drones, balloons). The MCV OBE provides two-way communications between drivers/operators and dispatchers and maintains and communicates current location and status information. A wide range of operational status is monitored, measured, and made available, depending on the specific type of vehicle or equipment. A snow plow for example, would monitor whether the plow is up or down and material usage information. The Maint and Constr Vehicle OBE may also contain capabilities to monitor vehicle systems to support maintenance of the vehicle itself. A separate 'Vehicle OBE' physical object supports the general vehicle safety and driver information capabilities that apply to all vehicles, including maintenance and construction vehicles. The Maint and Constr Vehicle OBE supplements these general capabilities with capabilities that are specific to maintenance and construction vehicles.
Included In
This Triple is in the following Service Packages:
This Triple is in the following Functional Objects:
This Triple is described by the following Functional View Data Flows:
- None
This Triple has the following triple relationships:
None |
Communication Solutions
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EU: Signal Control Messages - BTP/GeoNetworking/G5 (12)
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US: SAE Signal Control Messages - LTE-V2X WSMP (18)
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US: SAE Signal Control Messages - WAVE WSMP (20)
Selected Solution

Solution Description
ITS Application Entity
![]() ![]() ![]() ![]() SAE J2735 ![]() CEN ISO 19091 ![]() SAE J2945/B ![]() CTI 4501 ![]() |
Click gap icons for more info.
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Mgmt
Addressed Elsewhere ![]() |
Facilities
![]() SAE J2735 ![]() SAE J2945 ![]() |
Security
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TransNet
IEEE 1609.3 ![]() |
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Access
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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 |
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Time Context | Now |
Spatial Context | Adjacent |
Acknowledgement | False |
Cardinality | Broadcast |
Initiator | Source |
Authenticable | True |
Encrypt | False |
Interoperability | Description |
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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 | ||||
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Confidentiality | Integrity | Availability | ||
Rating | Not Applicable | Moderate | Moderate | |
Basis | 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 |
Security Characteristics | Value |
---|---|
Authenticable | True |
Encrypt | False |