Self-Driving Vehicle Intersection Coordination for Obstacle Deadlocks
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Solution Overview
Problem
Automated vehicles often face challenges at intersections, particularly when both vehicles are authorized to pass but are blocked by obstacles, leading to potential indefinite standstill situations.
Innovation Solution
The procedure involves an automated vehicle using its sensor system to detect obstacles and communicate with other vehicles to coordinate passage through intersections, ensuring that vehicles pass in an order that avoids blockages and allows for smooth traffic flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If automated vehicles independently follow right-of-way rules at intersections, then each vehicle operates autonomously without coordination, but blockage situations occur when vehicles cannot pass due to obstacles and must wait indefinitely
Solution Approach 1:
The patent combines autonomous vehicle operation with inter-vehicle communication systems. Vehicles merge independent decision-making with coordinated information exchange, allowing them to maintain automation while sharing obstacle data and coordinating passage sequences to prevent indefinite waiting at intersections.
Solution Approach 2:
The system implements feedback loops where vehicles continuously monitor for obstacles, communicate blockage information to other vehicles, and adjust their passage timing based on received feedback. This closed-loop control enables automated vehicles to dynamically adapt to changing intersection conditions and avoid deadlocks.
2Device complexity
If automated vehicles do not communicate with each other at intersections, then vehicle systems remain simple and independent, but blockage situations cannot be avoided or coordinated
Solution Approach 1:
The patent introduces communication protocols and message exchange mechanisms as intermediaries between vehicles. These standardized communication interfaces enable reliable coordination without requiring complex direct vehicle-to-vehicle integration, maintaining system simplicity while achieving dependable cooperative behavior at intersections.
3Reliability
If automated vehicles coordinate passage by exchanging information about obstacles and intended paths, then blockage situations are avoided, but communication infrastructure and processing requirements increase
Solution Approach 1:
The patent extracts and separates communication functions from core vehicle control systems. By implementing dedicated communication modules that handle obstacle information exchange independently, the system achieves reliable coordination while keeping the main vehicle control architecture simple and focused on autonomous driving tasks.
Data Source
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AI summary
The invention relates to a method for operating a self-driving vehicle (1) in the area of an intersection (K). According to the invention, provision is made for - a further vehicle (2) with right of way at the intersection (K) to be detected and its intended path to be determined, - should the further vehicle (2) be determined as needing to drive laterally past the vehicle (1) after passing the intersection (K) on the basis of the intended path, there is a determination as to whether the path of the further vehicle (2) is blocked by an obstacle, - should the path of the further vehicle (2) be determined as being blocked by an obstacle, a communications link to the further vehicle (2) is established, by means of which the vehicle (1) informs the further vehicle (2) about the blocked path.