Erratic Vehicle Detection With Risk-Scored Mitigation Control
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Solution Overview
Problem
Modern on-road vehicles lack effective systems to detect and mitigate erratic behavior in nearby vehicles, which can pose risks to the host vehicle, despite the presence of external sensors and ADAS systems.
Innovation Solution
A method and system that utilize external sensors to detect erratic vehicle behavior by analyzing movement patterns and assigning risk scores, followed by implementing mitigating actions such as warnings or partial autonomous control to maintain distance from the erratic vehicle, including calculating overtaking speeds and initiating lane changes when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external sensors and ADAS are used to monitor surrounding vehicles, then situational awareness is improved, but the system cannot detect or respond to erratic vehicle behavior
Solution Approach 1:
The system dynamically adjusts its monitoring and response strategies based on real-time analysis of target vehicle behavior. The erratic vehicle detection system continuously evaluates movement patterns, lane changes, and positioning data to adaptively modify warning and mitigation actions, transforming static sensor systems into dynamic response systems.
Solution Approach 2:
The system implements feedback loops where detection of erratic behavior triggers risk score calculations that feed into mitigating action selections. The continuous monitoring of target vehicle movements provides feedback that adjusts the host vehicle's response strategy, creating a closed-loop system that adapts to changing conditions.
2Object-affected harmful factors
If the host vehicle maintains distance from erratic vehicles through mitigating actions, then collision risk is reduced, but driving efficiency and speed are compromised
Solution Approach 1:
The system applies partial mitigating actions proportional to the assessed risk level. Rather than always maintaining maximum distance, the system adjusts the degree of mitigation based on the erratic vehicle's risk score, applying only the necessary level of caution to minimize impact on driving efficiency while still ensuring safety.
Solution Approach 2:
The system changes operational parameters such as following distance, lateral positioning, and speed adjustments dynamically based on the detected erratic behavior characteristics. By modifying these parameters adaptively rather than maintaining fixed safety margins, the system balances collision avoidance with driving efficiency.
3Loss of time
If the system assigns risk scores and implements mitigating actions autonomously, then response time is improved, but system complexity increases
Solution Approach 1:
The autonomous response system is segmented into distinct functional modules: erratic behavior detection, risk score calculation, mitigating action selection, and execution control. This modular segmentation allows each component to operate independently with well-defined interfaces, reducing overall system complexity while enabling rapid autonomous response.
Solution Approach 2:
The system performs self-service through automated risk assessment and mitigating action implementation without requiring external intervention. The autonomous vehicle controller independently evaluates detected behaviors, calculates appropriate risk scores, and executes mitigating actions, eliminating the need for manual assessment and reducing response time.
Data Source
AI summary
A system and method of detecting and mitigating an erratic vehicle by a host vehicle. The method includes gathering sensor information on a calibratable external region surrounding the host vehicle; analyzing the sensor information to detect a target vehicle traveling in a lane and a movement of the target vehicle in the lane; determining whether the movement of the target vehicle in the lane is erratic; if erratic then designating target vehicle as erratic vehicle; assigning a risk score to the erratic vehicle; and implementing a predetermined mitigating action correlating to the assigned risk score to the erratic vehicle. The mitigating action includes one or more of: warning an operator of the host vehicle, warning a vehicle proximal to the host vehicle, and taking at least partial control of the host vehicle to further distance the host vehicle apart from the erratic vehicle.