Driving Evaluation System Lane Centering Logic
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Solution Overview
Problem
Existing driving evaluation systems lack confidence in their evaluation results, as they uniformly penalize drivers for lane changes, which can be inappropriate when the vehicle is not centered, affecting driver confidence.
Innovation Solution
A driving evaluation system that acquires the operation state of a direction indicator and the vehicle's relative position to the lane, reducing the influence of the vehicle's position on the evaluation during a first period when the indicator is on and gradually reducing this influence during a second period, thereby evaluating driver skill more positively when the vehicle is closer to the lane center.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the influence of vehicle position on evaluation is uniformly applied, then the evaluation system is simple, but driver confidence in evaluation results decreases
Solution Approach 1:
The evaluation system dynamically adjusts the weight of vehicle position based on the direction indicator state. When the direction indicator is on, the system reduces the weight of position evaluation, and when it is off, the weight is increased. This dynamic adjustment resolves the contradiction by making the evaluation system adaptable to different driving contexts, thereby improving driver confidence without requiring overly complex static rules.
Solution Approach 2:
The system changes the evaluation parameters (weights) based on the temporal context of direction indicator operation. By adjusting the weight of vehicle position parameter according to whether the direction indicator is currently on or has recently been on, the system improves evaluation reliability while maintaining manageable complexity through parameter modulation rather than structural complexity.
2Measurement precision
If the influence of vehicle position is reduced during lane change indication, then evaluation accuracy during lane changes improves, but the evaluation becomes less consistent
Solution Approach 1:
The system applies periodic evaluation with different weights based on the direction indicator state. During the period when the indicator is on (lane change indication period), the position weight is reduced. During other periods, the position weight is increased. This periodic variation in evaluation criteria improves accuracy during lane changes while maintaining overall consistency through systematic temporal variation.
Solution Approach 2:
The system prepares for lane change evaluation by reducing position weight influence before the actual lane change occurs (when indicator is on). This preliminary adjustment ensures that the evaluation is more accurate during the critical lane change phase, while the systematic nature of this preliminary action maintains overall evaluation consistency.
3Ease of operation
If the evaluation penalizes all position deviations equally, then the evaluation rules are simple, but inappropriate penalties during lane changes reduce driver confidence
Solution Approach 1:
The system changes the evaluation parameters (weights applied to position deviations) based on the direction indicator state. When the indicator is on, indicating a lane change intention, the weight for position deviation is reduced. When the indicator is off, the weight is increased. This parameter change approach maintains relative simplicity while dramatically improving appropriateness and driver confidence.
Solution Approach 2:
The evaluation system transitions from static uniform penalization to dynamic contextual penalization. By making the position weight dynamic and dependent on direction indicator state, the system maintains ease of operation through a single adjustable parameter while improving reliability by adapting penalties to the actual driving context.
Data Source
AI summary
A driving evaluation system includes an acquirer configured to acquire an operation state of a direction indicator and a relative position of a vehicle with respect to a traveling lane along which the vehicle travels, and an evaluator configured to refer to the relative position acquired and thereby evaluate a driver's skill in driving as higher as the vehicle travels at a position closer to the center of the traveling lane, the evaluator reducing an influence of the relative position of the vehicle on an evaluation during a first period from when the direction indicator is operated to be in an on state on the basis of the operation state of the direction indicator, and gradually reducing the influence during a second period shorter than the first period from when the direction indicator is operated to be in an on state.