Vehicle Path Interaction Control for Safe Collision-Zone Distance
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Solution Overview
Problem
Existing vehicle control systems fail to effectively maintain appropriate distances and prevent collisions or near-collisions when paths of vehicles intersect, particularly due to unexpected maneuvers by other road users, leading to potential tailgating or cutting across.
Innovation Solution
A vehicle system that predicts potential collision zones by determining the intersection of paths between vehicles and road users, calculates threshold distances for safe stopping, and adjusts its behavior to maintain these distances through deceleration or path changes, using a cost function to penalize proximity to collision zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle maintains a larger distance from other road users to prevent collisions, then safety is improved, but the vehicle's productivity and efficiency deteriorate due to reduced speed and increased stopping time
Solution Approach 1:
The system dynamically adjusts the distance to the lead vehicle based on real-time conditions including relative speed, acceleration, and predicted trajectories. The cost function continuously evaluates proximity to collision zones and modifies the vehicle's behavior accordingly, allowing the distance to be neither fixed nor uniformly large, but optimally adapted to current traffic dynamics.
Solution Approach 2:
The system performs preliminary calculations of collision zones and threshold distances before actual collisions can occur. By predicting potential collision areas based on current trajectories and speeds, the system proactively adjusts vehicle behavior to maintain safe distances, preventing dangerous situations rather than reacting to them.
2Reliability
If the vehicle uses complex path prediction and collision zone calculation to maintain safe distance, then collision prevention is improved, but the device complexity increases
Solution Approach 1:
The system introduces a cost function as an intermediary that simplifies the complex interaction between multiple prediction components and the vehicle control system. This cost function aggregates information from trajectory predictions, collision zone calculations, and threshold distance determinations into a single evaluative metric that guides vehicle behavior adjustments in a computationally efficient manner.
3Reliability
If the vehicle decelerates or changes path to maintain threshold distance from collision zones, then safety is improved, but the loss of time increases due to unnecessary slowing down
Solution Approach 1:
The system changes parameters such as deceleration rate and path adjustment magnitude based on the calculated cost value. When the cost function indicates low risk, the vehicle maintains its current trajectory and speed. When risk increases, the system applies controlled deceleration or path changes proportional to the threat level, minimizing unnecessary time loss while maintaining safety.
Data Source
AI summary
There are provided methods, systems, and computer-readable media for maintain distance during vehicle interactions. The method comprises determining a first path for a vehicle traversing an environment, determining a second path for an object traversing the environment, determining a region of potential collision between the vehicle and the object, determining that one of the vehicle or the object is in or will be in the region of potential collision first, determining a stopping distance for at least the other of the vehicle or the object from a location in the region of potential collision, determining a current distance of at least said other of the vehicle or the object from the location in the region of potential collision, calculating a cost value based at least in part on the stopping distance and the current distance, and controlling the vehicle based at least in part on the cost value.