Proxy BSM Generation for Unequipped Vehicle Detection
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Solution Overview
Problem
Current connected vehicle systems face challenges in providing traffic safety warnings for vehicles without Onboard Units (OBUs), as they cannot communicate with unequipped vehicles, require OBU installation in all vehicles for full benefits, and drivers may resist data transmission and safety device purchases.
Innovation Solution
A mechanism that creates and blends proxy data for non-OBU equipped vehicles using roadside units, allowing OBU-equipped vehicles to detect and respond to unequipped vehicles as if they were equipped, without the need for OBUs in all vehicles, and without transmitting location data from unequipped vehicles, thus providing safety benefits without additional costs or driver opt-outs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If OBUs are installed in all vehicles to enable full safety benefits, then traffic safety warnings and collision avoidance are improved, but device complexity and cost increase
Solution Approach 1:
The patent introduces Roadside Units (RSUs) as intermediary devices that detect unequipped vehicles and generate proxy Basic Safety Messages (BSMs) on their behalf. These proxy BSMs are then broadcast to OBU-equipped vehicles, enabling safety warnings without requiring OBUs in all vehicles. The RSU acts as a mediator between unequipped vehicles and the connected vehicle network.
Solution Approach 2:
The system creates proxy BSMs that copy the format and functionality of actual vehicle BSMs. These proxy messages replicate the safety information that would normally be generated by unequipped vehicles, allowing OBU-equipped vehicles to receive and process safety warnings as if the unequipped vehicles were fully equipped.
2Reliability
If OBUs are installed in all vehicles to ensure comprehensive safety coverage, then collision avoidance capability is improved, but loss of time and implementation cost increase
Solution Approach 1:
Instead of requiring universal OBU installation (excessive action), the system implements partial coverage by enabling only OBU-equipped vehicles to participate in safety communications. The RSU infrastructure compensates for the missing OBUs in unequipped vehicles, allowing safety benefits to be achieved during the transition period while full penetration is not yet complete.
3Reliability
If location data is transmitted from unequipped vehicles to enable safety warnings, then traffic safety is improved, but object-generated harmful factors increase due to data transmission concerns
Solution Approach 1:
The RSU serves as an intermediary that collects location and vehicle data from unequipped vehicles and generates proxy BSMs without directly transmitting raw location data from the unequipped vehicles themselves. This indirect approach maintains safety warning accuracy while reducing direct data transmission from unequipped vehicles, thereby addressing privacy concerns.
Data Source
AI summary
A connected traffic safety system comprises at least one roadside unit and a vehicle detection device. The roadside unit is configured to transmit wireless signals and receive corresponding responses from a corresponding wireless device of an Onboard Unit (OBU)-equipped vehicle, and to send at least one of vehicle location data, direction heading data, elevation data and speed data from the OBU-equipped vehicle to a traffic signal controller. The vehicle detection device is configured to generate vehicle detection data of at least one non-Onboard Unit (OBU)-equipped vehicle. The roadside unit to receive the vehicle detection data for creating a proxy data wireless message for the non-Onboard Unit (OBU)-equipped vehicle. The roadside unit to mimic the proxy data wireless message as a first Basic Safety Message (BSM) for the non-Onboard Unit (OBU)-equipped vehicle that would have been available to the Onboard Unit (OBU)-equipped vehicle present nearby.