Lane-Change Acceptance Control Using Blinker Withdrawal Detection
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Solution Overview
Problem
Existing travel control devices for vehicles fail to accurately terminate acceleration/deceleration control when an adjacent vehicle withdraws its intention to change lanes, leading to unnecessary termination of interruption acceptance control.
Innovation Solution
A vehicle travel control device with an electronic control unit that terminates interruption acceptance control when the adjacent vehicle stops blinking its blinkers and determines that the intention to change lanes has been withdrawn, using surrounding information acquisition and map data to ensure accurate determination of lane changes and relative speed/distance conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the interruption acceptance control is terminated when the adjacent vehicle stops blinking blinkers, then the control can be ended when the intention to change lanes is withdrawn, but the control may be terminated unnecessarily when the blinkers are temporarily turned off
Solution Approach 1:
The control termination condition is set in advance to require that the blinkers remain off for a predetermined time period. This preliminary time-based condition prevents premature termination when blinkers are temporarily turned off, while still enabling timely termination when the lane change intention is genuinely withdrawn.
Solution Approach 2:
The system continuously monitors the blinker state of the adjacent vehicle and uses this feedback information to determine whether to terminate the interruption acceptance control. By incorporating temporal feedback (checking if blinkers remain off for a predetermined time), the system accurately distinguishes between temporary blinker deactivation and genuine withdrawal of lane change intention.
2Reliability
If the interruption acceptance control continues when lanes merge, then safe lane changes are ensured, but the control duration is extended
Solution Approach 1:
The interruption acceptance control dynamically adapts to changing road conditions by detecting lane merges. When a lane merge is detected, the control is extended beyond the normal termination conditions, allowing the system to flexibly respond to environmental changes while maintaining safety.
Solution Approach 2:
The control termination parameters are changed based on road geometry conditions. When lane merges are detected, the termination conditions are modified to prevent premature control termination, thereby extending the control duration only when necessary for safety reasons.
Data Source
AI summary
A vehicle travel control device comprising a surrounding information acquisition device that acquires information on targets around an own vehicle, and an electronic control unit configured to execute interruption acceptance control by acceleration/deceleration of the own vehicle so that an adjacent vehicle can interrupt in when it is determined that the adjacent vehicle is attempting to interrupt in front of the own vehicle by flashing blinkers based on the information on targets acquired by the surrounding information acquisition device, and the electronic control unit is configured to terminate the interruption acceptance control when it is determined that the adjacent vehicle is not executing the interruption and the adjacent vehicle has stopped blinking its blinkers in a situation where the interruption acceptance control is being executed.