Lane Deviation Control for Passing Turn-Signal Vehicles
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Solution Overview
Problem
Existing vehicle control devices may cause annoyance to drivers when deviation control is executed during intentional steering maneuvers to pass right-turn, left-turn, or hazard-activated vehicles, as they fail to account for these scenarios.
Innovation Solution
A vehicle control device that includes a camera and control unit to identify vehicles with specific conditions (e.g., stopped or slow vehicles with turn signals on) in front, reducing deviation control and warning when all conditions are met, thereby minimizing annoyance during intentional steering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If deviation control is executed when the host vehicle deviates from its travel area, then the host vehicle returns to the correct lane, but the driver may find it annoying when performing intentional steering to pass slow vehicles
Solution Approach 1:
The system dynamically adjusts the threshold steering amount based on detection results. When a slow vehicle is detected in the adjacent lane, the threshold is increased to allow intentional steering maneuvers without triggering deviation control. When no slow vehicle is detected, the threshold returns to normal levels to maintain lane keeping accuracy. This dynamic adjustment resolves the contradiction by adapting the control sensitivity to the current driving context.
Solution Approach 2:
The system continuously monitors the adjacent lane for slow vehicles and uses this feedback to modulate the deviation control behavior. The detection unit provides real-time information about slow vehicles, and the control unit adjusts the steering threshold accordingly. This feedback mechanism ensures that deviation control is suppressed only when necessary (when passing slow vehicles) while maintaining normal operation otherwise, balancing reliability and driver comfort.
2Ease of operation
If the predetermined steering threshold is increased to avoid stopping deviation control during intentional steering, then driver comfort improves, but deviation control may stop inappropriately when the driver notices adjacent vehicles
Solution Approach 1:
Instead of uniformly increasing the threshold across all situations, the system applies a localized adjustment only when a slow vehicle is detected in the adjacent lane. The threshold is selectively increased in this specific context while remaining normal in other situations. This local quality approach prevents inappropriate stopping of deviation control while maintaining driver comfort during legitimate passing maneuvers.
3Reliability
If deviation control is continuously executed to maintain lane position, then lane keeping reliability improves, but it causes annoyance when drivers intentionally steer to pass stopped or slow vehicles with turn signals
Solution Approach 1:
The system performs preliminary detection of slow vehicles in the adjacent lane before deviation control is triggered. By detecting the presence of slow vehicles with turn signals or hazard lights in advance, the system proactively adjusts the steering threshold to prevent unnecessary deviation control intervention. This preliminary action eliminates the harmful effect of driver annoyance while maintaining lane keeping reliability when no passing maneuver is intended.
Data Source
AI summary
When a preceding vehicle condition is satisfied, a vehicle control device reduces either or both of deviation warning and deviation control compared to when the preceding vehicle condition is not satisfied. The preceding vehicle condition is satisfied when the condition that the other vehicle is detected in front of the host vehicle, and the left lateral distance or the right lateral distance is equal to or greater than the first threshold distance, the condition that the vehicle speed of the other vehicle is equal to or lower than the threshold vehicle speed, and the condition that both the right and left turn signals of the other vehicle are activated, only the right turn signal of the other vehicle located on the right side of the travel area is activated, or only the left turn signal of the other vehicle located on the left side of the travel area is activated.