Turning Vehicle Collision Avoidance for Multi-Lane Intersections
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Solution Overview
Problem
Existing vehicle collision avoidance systems struggle to accurately determine targets for collision avoidance operations, particularly in complex intersections with multiple traffic lanes, leading to potential collisions due to inadequate criteria for determining which vehicles to prioritize for avoidance maneuvers.
Innovation Solution
A control apparatus for vehicles that includes a collision avoidance unit, which determines the target for collision avoidance based on specific conditions such as traffic lane width and turn angle, ensuring that vehicles on closer lanes are prioritized for collision avoidance operations unless predetermined conditions are met, thereby reducing the risk of straying onto farther lanes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If collision avoidance operation is performed on all detected vehicles, then safety is improved, but false avoidance operations increase on vehicles with no collision possibility
Solution Approach 1:
The patent applies local quality by differentiating collision risk assessment based on specific traffic lane conditions. Vehicles on the first traffic lane (closer to the turning vehicle) are assessed with higher collision risk and trigger avoidance operations, while vehicles on the second traffic lane (farther away) are excluded unless specific conditions are met. This localized differentiation of risk assessment resolves the contradiction by applying collision avoidance only where genuinely needed.
Solution Approach 2:
The patent segments the traffic lanes into distinct risk zones: the first traffic lane is identified as a high-risk zone requiring collision avoidance operations, while the second traffic lane is a low-risk zone where avoidance operations are generally unnecessary. This segmentation allows the system to selectively apply avoidance operations only to vehicles in the high-risk zone, eliminating false alarms for vehicles in the low-risk zone.
2Speed
If simple criteria (grade separated crossing, center median, traffic light) are used to determine collision targets, then determination speed is improved, but determination accuracy deteriorates in complex intersections
Solution Approach 1:
The patent applies preliminary action by pre-establishing the rule that vehicles on the first traffic lane are always set as collision targets, while vehicles on the second traffic lane are excluded unless specific conditions are satisfied. This preliminary classification based on traffic lane position enables rapid determination without complex real-time analysis, maintaining high determination speed while improving accuracy in complex intersections.
Data Source
AI summary
A control apparatus of a vehicle executes an avoidance operation for avoiding collision with an object that is moving in a direction intersecting a longer direction of the vehicle. In a case where the vehicle is travelling on a first road, and makes a turn toward a first traffic lane of a second road intersecting the first road, the apparatus does not set a vehicle that is travelling on a second traffic lane of the second road that is farther from the vehicle than the first traffic lane, as a target for the avoidance operation, if a predetermined condition is not satisfied, or irrespective of whether or not the predetermined condition is satisfied, and sets a vehicle that is travelling on the first traffic lane, as the target, irrespective of whether or not the predetermined condition is satisfied.