Autonomous Vehicle Following Distance Control for Brake Checking
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Solution Overview
Problem
Heavy braking (brake checking) by leading vehicles can lead to dangerous situations and rear-end collisions, especially with the increasing presence of autonomous vehicles, where maintaining a suitable distance is crucial for safety and legal implications.
Innovation Solution
A method for an autonomous vehicle to record environmental data using a sensor system, detect potentially dangerous situations such as heavy braking, and adjust its distance to maintain safety, while also evaluating the quality of the leading vehicle to assess risk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the autonomous vehicle maintains a short distance to the leading vehicle to improve traffic flow and productivity, then productivity increases, but the risk of rear-end collisions from brake checking increases
Solution Approach 1:
The system performs preliminary detection of the leading vehicle's brake status before a collision can occur. The sensor system continuously monitors the leading vehicle, and when brake checking is detected, the autonomous vehicle proactively increases following distance in advance, preventing the harmful effect of rear-end collision while maintaining optimal traffic flow during normal conditions
Solution Approach 2:
The system establishes a feedback loop where sensor data about the leading vehicle's braking behavior is continuously monitored and fed back to the control system. When brake checking is detected, the feedback triggers an automatic increase in following distance, creating a dynamic safety mechanism that adapts to real-time traffic conditions while maintaining productivity during normal operation
2Reliability
If the autonomous vehicle increases distance to the leading vehicle to avoid brake checking, then safety improves, but traffic flow efficiency and productivity decrease
Solution Approach 1:
The system dynamically adjusts the following distance based on real-time detection of the leading vehicle's braking behavior. During normal conditions, the autonomous vehicle maintains an optimal short distance for productivity. When brake checking is detected, the distance dynamically increases to ensure safety, and returns to optimal distance when the dangerous behavior ceases, thus balancing safety and productivity continuously
3Measurement precision
If the sensor system continuously monitors the leading vehicle for dangerous behavior, then detection capability improves, but energy consumption and system complexity increase
Solution Approach 1:
The sensor system operates in periodic cycles rather than continuous monitoring. It periodically scans the leading vehicle for signs of brake checking and other dangerous behaviors. This periodic operation maintains adequate detection precision while significantly reducing energy consumption compared to continuous monitoring, as the system only activates full monitoring when potential dangerous behavior is detected
Data Source
AI summary
A method for producing a suitable distance between an autonomous vehicle and a second vehicle. The method includes recording data of an environment including the second vehicle driving ahead of the autonomous vehicle along a direction of travel, the data being recorded by a sensor system positioned relative to the autonomous vehicle in the direction of travel and in communication with a computing unit. The method includes detecting a potentially dangerous situation by the sensor system based on a distance between the autonomous vehicle and the second vehicle. The method includes adjusting the autonomous vehicle to maintain the suitable between the autonomous vehicle and the second vehicle.