Autonomous Vehicle Intersection Entry Control
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Solution Overview
Problem
Autonomous vehicles face challenges in controlling their entry into intersections, particularly when encountering vehicles traveling at slow speeds, which can lead to tailgating and obstructing other paths, especially in congested traffic situations.
Innovation Solution
A method and apparatus that utilize traffic and driving information to determine whether an autonomous vehicle should enter an intersection, involving the use of cameras to identify traffic lights, calculate distances, and determine stop positions based on field of view and traffic signals, ensuring the vehicle stops until it is safe to proceed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the autonomous vehicle enters the intersection without checking the speed of preceding vehicles, then the vehicle can maintain its driving speed and improve productivity, but it may cause tailgating and obstruct other paths which worsens traffic flow and safety
Solution Approach 1:
The system performs preliminary detection of the preceding vehicle's speed before the autonomous vehicle enters the intersection. By checking whether the preceding vehicle's speed is less than or equal to a preset speed threshold in advance, the system prevents tailgating behavior before it occurs, ensuring safe following distance is maintained while allowing the vehicle to proceed efficiently when conditions permit
Solution Approach 2:
The system continuously monitors the speed of the preceding vehicle and uses this feedback information to dynamically adjust the autonomous vehicle's entry decision into the intersection. When the preceding vehicle's speed is low (indicating potential congestion or slow movement), the system receives feedback to delay entry, thereby preventing tailgating while optimizing overall traffic flow
2Reliability
If the autonomous vehicle stops to check traffic information and driving information before entering the intersection, then it can ensure safe driving and compliance with traffic regulations, but it increases the time required to reach the destination
Solution Approach 1:
The system performs preliminary acquisition of traffic information (such as traffic light status) and driving information (such as preceding vehicle speed) before the vehicle reaches the intersection. This advance preparation allows the vehicle to make informed entry decisions without requiring time-consuming checks at the last moment, thus maintaining safety while minimizing time loss
Solution Approach 2:
The system selectively checks only the critical information needed for safe intersection entry (traffic light status and preceding vehicle speed) rather than comprehensively analyzing all possible parameters. This partial checking approach ensures necessary safety verification while avoiding excessive time consumption from unnecessary data collection
3Productivity
If the autonomous vehicle maintains a safe distance from the intersection stop line, then it can prevent obstructing other paths and improve traffic flow, but it may increase stopping distance and affect braking performance
Solution Approach 1:
The system dynamically determines the stop position based on real-time conditions rather than using a fixed distance from the stop line. By calculating the appropriate stopping point considering factors like preceding vehicle speed and traffic light status, the system optimizes the balance between maintaining safe following distance (to prevent tailgating) and minimizing unnecessary stopping distance (to maintain braking readiness and traffic flow efficiency)
Data Source
AI summary
A method and apparatus to control driving of a vehicle is provided. To control driving of a vehicle, the method and apparatus obtain traffic information related to an intersection in response to a position of the vehicle being at a predetermined proximity to the intersection, and obtain driving information related to another vehicle driving in front of and in the same direction as the vehicle. the vehicle by determining whether the vehicle is to enter the intersection based on the traffic information and the driving information.