Vehicle Risk Evaluation Aligning Driver Perception
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Solution Overview
Problem
Existing risk evaluation apparatuses for vehicles rely solely on surrounding information, leading to unreliable risk assessments that may not align with a driver's perception, resulting in mismatched evaluation results.
Innovation Solution
An evaluating apparatus that determines a first risk value based on driving behavior and a second risk value based on surrounding information, with a risk evaluator calculating the reliability of the second risk value using the first risk value, thereby aligning the risk evaluation with the driver's feeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If risk evaluation is performed based only on surrounding information, then the evaluation process is simple, but the reliability of the risk evaluation is low and does not match driver's feeling
Solution Approach 1:
The risk evaluation is divided into two separate determination processes: first determination based on driving behavior and second determination based on surrounding information. Each determination operates independently and contributes to the overall risk evaluation, allowing the system to maintain simplicity while improving reliability through multiple evaluation dimensions.
Solution Approach 2:
The patent combines two different risk determination approaches (driving behavior-based and surrounding information-based) into a unified risk evaluation system. By merging these two determinations, the system achieves both the simplicity of automated evaluation and the reliability of driver-aligned risk assessment.
2Measurement precision
If risk evaluation uses only surrounding information, then the system is easy to operate, but the evaluation result does not match driver's feeling
Solution Approach 1:
The system automatically performs both first determination (driving behavior analysis) and second determination (surrounding information analysis) without requiring driver input or manual operation. The risk evaluation process serves itself by autonomously collecting and processing data from multiple sources, maintaining ease of operation while improving measurement precision.
Solution Approach 2:
The patent uses the first determination result (driver behavior-based risk) as a reference to evaluate and adjust the second determination result (surrounding information-based risk). This feedback mechanism ensures that the final risk evaluation aligns with driver's feeling while maintaining automated operation.
Data Source
AI summary
An evaluating apparatus is configured to evaluate a risk that exists in surroundings of a road on which a vehicle travels. The evaluating apparatus is provided with: a first determinator configured to determine a first risk value indicating an extent of a risk in one section of the road, on the basis of a feature value indicating driving behavior of a driver of the vehicle; a second determinator configured to determine a second risk value indicating an extent of a risk in the one section, on the basis of surrounding information about the surroundings of the road; and an acquirer configured to obtain reliability of the second risk value, by evaluating the second risk value by using the first risk value.