Car2X Intersection Safety Prediction for Vulnerable Road Users
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Solution Overview
Problem
Conventional vehicle safety systems that rely solely on onboard sensors struggle to detect potentially dangerous situations with obscured vulnerable road users, such as cyclists and motorcyclists, especially at intersections, due to limited line of sight and delayed warnings, which can lead to accidents.
Innovation Solution
The method employs Car2X communication to transmit and link vehicle status data with navigation data, enabling the prediction of future routes and positions of vehicles and road users, including classification and lane information, to anticipate and prevent collisions by initiating braking or evasive maneuvers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional sensors (camera, ultrasonic, radar, lidar) are used for detection, then the system can detect road users within line of sight, but it cannot detect obscured road users early enough to prevent collisions
Solution Approach 1:
The system performs preliminary detection of road users before they enter the vehicle's path by using Car2X communication to receive position and status data from other vehicles and infrastructure. This allows the system to identify and track vulnerable road users (cyclists, motorcyclists) in advance, predict their future routes, and prepare for potential collision scenarios before the road users become obscured or enter the critical detection zone of onboard sensors.
Solution Approach 2:
The patent introduces Car2X communication infrastructure as an intermediary between vehicles and the environment. This intermediary system transmits status data (position, speed, direction) and navigation data among vehicles and infrastructure elements, enabling the detection system to obtain information about road users that would otherwise be invisible to direct sensor observation. The intermediary allows information to be shared across the network, overcoming the line-of-sight limitation of conventional sensors.
2Reliability
If warning is given at the latest possible time to reduce false activations, then false warnings are minimized, but the system cannot provide sufficient time for driver reaction and avoidance maneuvers
Solution Approach 1:
The system calculates potential collision scenarios in advance by combining current status data with navigation data to predict future routes. When a potential collision is predicted, the system issues warnings early in the prediction timeline, well before the actual collision risk materializes. This preliminary warning approach provides ample driver reaction time while maintaining high accuracy by only triggering warnings when the predicted routes actually intersect, thereby reducing false activations.
3Device complexity
If only onboard sensors are used for detection, then the system structure remains simple, but the detection range is limited by line of sight and cannot cover obscured areas
Solution Approach 1:
The system utilizes Car2X communication infrastructure that serves multiple functions: it transmits position data, status information, navigation data, and enables vehicle-to-vehicle and vehicle-to-infrastructure communication. This multi-functional communication infrastructure replaces the need for multiple separate detection systems, allowing the system to achieve extended detection coverage through a relatively simple communication-based architecture rather than deploying numerous sensors throughout the environment.
Data Source
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AI summary
The invention relates to a method for detecting potentially dangerous situations in an intersection area in road traffic, wherein a vehicle (10) communicates with further vehicles (14) by means of Car2X communication (12) and/or wherein the vehicle (10) communicates with at least part of a road traffic infrastructure (16) by means of Car2X communication (12). In a method in which early detection of a potentially dangerous situation is made possible so that the risk of an accident with an unprotected road user is minimised, it is provided that in the Car2-X communication (12) information about status data of the vehicle (10) and information about status data of the other vehicles (14) is transmitted and that the status data is linked with navigation data, in particular with coordinates, in such a way that a prediction of a future route (18) of the vehicle (10) and the other vehicles (14) is made possible.