Link Type: Short Range Wireless
Maint and Constr Vehicle OBE --> Connected Vehicle Roadside Equipment:
vehicle location and motion
Definitions
vehicle location and motion (Information Flow): Data describing the vehicle's location in three dimensions, heading, speed, acceleration, braking status, and size.
Maint and Constr Vehicle OBE (Source 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.
Connected Vehicle Roadside Equipment (Destination 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.
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: CA Service - BTP/GeoNetworking/G5 (13)
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US: SAE LTE-V2X BSM - LTE-V2X WSMP (16)
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US: SAE Basic Safety Messages - WAVE WSMP (18)
Selected Solution

Solution Description
ITS Application Entity
![]() ![]() SAE J2735 ![]() SAE J2945/1 ![]() |
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 | Low | |
Basis | This data is intentionally transmitted to everyone via a broadcast. Much of its information content can also be determined via other visual indicators | This information is used in determining whether or not to grant a vehicle priority to the intersection. An incorrect message may lead to a transit vehicle not receiving a green light after requesting it, or to a light staying green for an unnecessarily long amount of time. In either situation, it should only have a small impact on traffic. DISC: THEA believes this to be HIGH: "BSM info needs to be accurate and should not be tampered with" | If this information is not available, the vehicle may not receive the priority it requested. In the worst case scenario the transit vehicle would be forced to wait at some lights until they turned green. It would be more useful for a device to support this application, and only have some messages received, than to not support this application at all. DISC: THEA believes this to be MODERATE: "BSM must be broadcast regularly to make data available for the RSE, but availability cannot be guaranteed over a wireless medium" |
Security Characteristics | Value |
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Authenticable | True |
Encrypt | False |