Vehicle Control Device for Circular Intersection Entry
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Solution Overview
Problem
Traffic congestion often occurs at circular intersections due to the complex geometry, making it difficult to maintain smooth traffic flow compared to perpendicular intersections.
Innovation Solution
A vehicle control device and method that includes a recognizer to identify the intersection type, a determiner to assess entry conditions, and a condition changer to adjust these conditions for easier entry into circular intersections by modifying the angle of entry and speed limits, allowing for smoother integration into circular intersections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If vehicles use standard entry conditions for all intersections, then safety is maintained, but traffic flow efficiency deteriorates at circular intersections
Solution Approach 1:
The patent applies different entry conditions specifically to circular intersections versus other intersections. The determiner adjusts determination conditions based on intersection type recognition, allowing optimized entry rules for circular intersections while maintaining standard conditions for other intersections, thereby resolving the contradiction between efficiency and reliability.
Solution Approach 2:
The patent changes the determination conditions parameters when entering circular intersections compared to other intersections. By modifying entry criteria such as speed thresholds, angle requirements, or gap acceptance parameters specifically for circular intersections, the system improves traffic flow efficiency while maintaining safety through adaptive parameter adjustment.
2Productivity
If entry conditions are made easier for circular intersections, then traffic flow improves, but safety may deteriorate
Solution Approach 1:
The patent employs a determiner that continuously monitors surrounding conditions and dynamically adjusts entry determination based on real-time assessment. The system evaluates multiple factors including vehicle positions, speeds, and geometric conditions before allowing entry, providing feedback control that balances traffic flow improvement with safety maintenance.
Solution Approach 2:
The entry conditions are made dynamic rather than static. The determination condition is adjusted based on the specific situation at circular intersections, allowing the system to adapt entry criteria to current traffic conditions, vehicle positions, and geometric constraints, thereby improving flow while maintaining safety through flexible, context-dependent decision-making.
Data Source
AI summary
A vehicle control device includes a recognizer configured to recognize a surrounding situation of a vehicle, a determiner configured to determine that entry into an intersection is allowed, on the basis of a certain determination condition, when the recognizer has recognized that there is the intersection ahead of the vehicle, a driving controller configured to cause the vehicle to enter the intersection when the determiner has determined that the entry into the intersection is allowed, and a condition changer configured to change the determination condition to a condition under which it is easier for the entry into the intersection to be determined to be allowed in a case in which the intersection recognized by the recognizer is a circular intersection, in comparison with a case in which the intersection recognized by the recognizer is another intersection different from the circular intersection.