Automated Lane Guidance for Safe Lane Release and Return
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Solution Overview
Problem
Existing driving assistants for motor vehicles lack the capability to safely and efficiently perform lane releases and returns on multilane roadways, which can lead to increased risk of rear-end collisions and inefficient use of road resources.
Innovation Solution
A method and device for operating a driving assistant that enables automated lane guidance, including the steps of ascertaining obstacle situations, performing lane releases through automated lane changes, assessing lane return situations, and deciding on lane returns, all while utilizing video and radar data, as well as car-to-car and car-to-infrastructure communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automated lane guidance is maintained in the first lane, then lane stability is improved, but the risk of rear-end collisions increases when obstacle situations occur
Solution Approach 1:
The system performs preliminary assessment of lane return situations before executing lane changes. It evaluates whether the lane is suitable for return based on detected traffic conditions, performing the assessment action in advance to prevent harmful outcomes while maintaining automated guidance reliability
Solution Approach 2:
The system continuously monitors obstacle situations and provides feedback on lane return suitability. Based on this feedback from environmental sensing, the automated guidance system dynamically adjusts lane change decisions, resolving the contradiction between maintaining lane stability and avoiding collision risks
2Object-affected harmful factors
If lane releases are performed frequently to avoid obstacles, then the risk of rear-end collisions is reduced, but road resource utilization efficiency deteriorates
Solution Approach 1:
The system applies different lane change strategies based on local traffic conditions. Lane releases are performed selectively only when obstacle situations are detected in specific locations, rather than applying a uniform frequent lane changing approach, thus avoiding unnecessary road resource disruption while maintaining safety
Solution Approach 2:
The system changes the parameter of lane change frequency dynamically based on detected obstacle situations. Instead of maintaining a constant high frequency of lane releases, the frequency is adjusted according to actual traffic conditions, resolving the contradiction between collision avoidance and road resource efficiency
3Reliability
If automated lane change functions are added for lane releases and returns, then driving safety is improved, but system complexity increases
Solution Approach 1:
The automated guidance system is enhanced to perform multiple functions: automated lane guidance, obstacle detection, lane return suitability assessment, and automated lane change execution. By making the system universal and multi-functional, safety is improved without requiring entirely separate systems for each function
Solution Approach 2:
The lane release and lane return functions are merged into the existing automated lane guidance system. The obstacle detection and lane change execution capabilities are integrated with the lane guidance controller, reducing overall system complexity compared to having separate independent systems for each function
Data Source
AI summary
A method for operating a driving assistant for the automated lateral guidance of a motor vehicle. The method includes: carrying out an automated lane guidance of the motor vehicle in a first lane; ascertaining, by the motor vehicle, an obstacle situation of a further motor vehicle in the first lane; carrying out a lane release with the aid of an automated lane change of the motor vehicle into a second lane; ascertaining a lane return situation with regard to the motor vehicle; deciding on the lane return into the first lane, taking the lane return situation into account; carrying out a decided lane return into the first lane with the aid of an automated lane change; continuing the automated lane guidance of the motor vehicle in the first lane. A device for carrying out the method is also described.