Vehicle Control Device Lateral Offset Adjacent Lane Safety
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Solution Overview
Problem
When a vehicle travels on a central lane of a road with three or more lanes, the situation can arise where vehicles are present in the adjacent lanes, leading to vehicle behavior that may cause anxiety to occupants, as the vehicle may inadvertently move closer to the second adjacent lane if the target lateral position is offset to avoid the first adjacent lane.
Innovation Solution
A vehicle control device is implemented, which includes first and second vehicle detection units, an offset unit, and a controller. The device detects vehicles in adjacent lanes and offsets the target lateral position to separate the vehicle from the first adjacent lane only if certain conditions are met, specifically when the vehicle-to-vehicle distance with the second adjacent vehicle is greater than a predetermined distance or the time to collision is greater than a predetermined time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the target lateral position is offset to separate from the first adjacent lane, then the vehicle is separated from the first vehicle, but the vehicle may move closer to the second vehicle causing anxiety to occupants
Solution Approach 1:
The system performs preliminary checking of the second adjacent lane before offsetting the target lateral position. By detecting vehicles in the second adjacent lane and evaluating distance/time-to-collision in advance, the system prevents the harmful effect of approaching the second vehicle before the offset action is taken.
Solution Approach 2:
The system continuously monitors the vehicle environment including both first and second adjacent lanes, and adjusts the offset decision based on real-time feedback from multiple sensors. The offset unit receives feedback about vehicle positions and dynamically determines whether offsetting is safe based on current conditions.
2Shape
If offset processing is executed to avoid the first vehicle, then lateral separation is achieved, but vehicle behavior becomes unstable near the second vehicle
Solution Approach 1:
The system prevents unstable vehicle behavior by checking conditions in the second adjacent lane before executing offset processing. The prohibition of offset when vehicles are detected in the second lane prevents the harmful effect of lateral position instability.
3Reliability
If the vehicle continuously adjusts lateral position to maintain separation, then separation from first vehicle is maintained, but unnecessary offset processing increases system complexity
Solution Approach 1:
The system extracts and evaluates information about vehicles in both first and second adjacent lanes before making offset decisions. By taking out the necessary detection information and evaluating it against predefined conditions, the system avoids unnecessary offset processing while maintaining reliable separation when needed.
Data Source
AI summary
A vehicle control device includes an offset unit configured to execute offset processing for offsetting the target lateral position such that the target lateral position is separated from the first lane, when a relationship between the first vehicle and the vehicle satisfies an offset condition. The offset unit is configured not to execute the offset processing even if the relationship between the first vehicle and the vehicle satisfies the predetermined offset condition, when a vehicle-to-vehicle distance between the second vehicle and the vehicle is equal to or less than a predetermined distance or when a value obtained by dividing the vehicle-to-vehicle distance between the second vehicle and the vehicle by a relative speed between the second vehicle and the vehicle is equal to or less than a predetermined time.