Autonomous Overtaking Control Using Driver Feedback Timing
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Solution Overview
Problem
In autonomous driving systems, drivers may feel burdened when control suggestions for lane changes do not align with their intentions, leading to discomfort and potential rejection of necessary vehicle maneuvers.
Innovation Solution
An electronic control unit that suggests overtaking or discretionary lane changes based on map information and the vehicle's environment, recognizes driver acceptance or rejection, and adjusts prohibition durations for subsequent suggestions to align with driver intentions, thereby reducing burden by avoiding frequent or unwanted suggestions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the autonomous driving system frequently suggests lane changes to ensure optimal routing, then the productivity of the driving system is improved, but the driver burden increases and driver acceptance decreases
Solution Approach 1:
The system monitors driver responses to suggestion messages (acceptance or rejection) and uses this feedback to dynamically adjust the prohibition period. When a driver rejects a suggestion, the system extends the prohibition period for subsequent suggestions, thereby reducing driver burden while maintaining necessary lane change executions.
Solution Approach 2:
The prohibition period is made dynamic rather than fixed. The system adjusts the duration of the prohibition period based on driver behavior patterns, extending it when rejections occur and potentially shortening it when acceptances occur, allowing the system to adapt to individual driver preferences and reduce burden.
2Reliability
If the autonomous driving system waits for driver acceptance before executing lane changes, then driver acceptance is improved, but the loss of time for maneuver execution increases
Solution Approach 1:
The system sends suggestion messages to the driver in advance before executing the lane change maneuver. This preliminary action gives the driver time to process and respond to the suggestion, improving acceptance rates while the system simultaneously monitors for driver input to minimize delays.
Solution Approach 2:
The system implements a timeout mechanism where if the driver does not respond within a predetermined period, the system proceeds with the lane change execution. This feedback-based approach ensures that necessary maneuvers are executed in a timely manner while still allowing driver input when available.
3Reliability
If the autonomous driving system sends multiple suggestion messages to ensure driver awareness, then the reliability of suggestion delivery is improved, but the driver burden increases
Solution Approach 1:
The system proactively prevents excessive suggestion messages by implementing a prohibition period mechanism. After sending a suggestion message, the system automatically prohibits subsequent suggestions for a predetermined duration, thereby avoiding driver overload while ensuring the initial suggestion is delivered and processed.
Solution Approach 2:
The system adjusts the prohibition period duration based on driver responses. When drivers accept suggestions, the prohibition period may be shortened, allowing more frequent suggestions. When drivers reject suggestions, the prohibition period is extended, reducing the frequency of suggestions and thereby reducing driver burden while maintaining reliable delivery of necessary suggestions.
Data Source
AI summary
An autonomous driving system includes an electronic control unit. The electronic control unit is configured to suggest to a driver that a host vehicle overtake a preceding vehicle during autonomous driving, recognize whether the driver accepts a suggestion for the overtaking, when the electronic control unit recognizes that the driver accepts the suggestion, cause the host vehicle to overtake the preceding vehicle, and, when the electronic control unit recognizes that the driver rejects the suggestion, not cause the host vehicle to overtake the preceding vehicle, set a first prohibition duration, and, when the electronic control unit suggests to the driver that the host vehicle overtake the preceding vehicle and recognizes that the driver rejects the suggestion, extend the first prohibition duration as compared to when the electronic control unit suggests to the driver that the host vehicle overtake the preceding vehicle and recognizes that the driver accepts the suggestion.