Lane Change Control Using Relative Vehicle Behavior Analysis
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Solution Overview
Problem
Current lane change control systems for vehicles lack accuracy in determining the behavior of following vehicles, particularly in assessing whether they intend to give way, which is crucial for safe lane changes.
Innovation Solution
A traveling control apparatus that acquires information about preceding and following vehicles using cameras, LIDAR, and radar, and estimates the intention to give way by analyzing the behavior of the following vehicle relative to both the preceding vehicle and the self-vehicle, using an acceleration/deceleration prediction map to determine if a lane change is permissible.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the system only detects the speed of the following vehicle, then the determination of following vehicle behavior is simplified, but the accuracy of determining whether the following vehicle intends to give way is insufficient
Solution Approach 1:
The patent transitions from one-dimensional speed detection to two-dimensional behavior analysis by incorporating both the following vehicle's behavior relative to the self-vehicle and its behavior relative to the preceding vehicle. This dimensional expansion enables more accurate intention determination without requiring overly complex system architecture.
Solution Approach 2:
The patent introduces the preceding vehicle as an intermediary reference object to mediate the determination of following vehicle intention. By observing how the following vehicle behaves toward both the self-vehicle and the preceding vehicle, the system can more accurately infer whether the following vehicle intends to give way, resolving the contradiction between simplicity and accuracy.
2Reliability
If the system considers multiple vehicle behaviors and relationships, then the determination accuracy improves, but the computational complexity and processing time increase
Solution Approach 1:
The system continuously monitors and preliminarily processes the behaviors of the following vehicle relative to both the self-vehicle and preceding vehicle before a lane change maneuver is initiated. This preliminary action ensures that when a lane change decision is needed, the analysis is already partially complete, reducing the time loss while maintaining high reliability.
Solution Approach 2:
The behavior analysis mechanism serves multiple functions: it determines following vehicle intention, assesses lane change safety, and provides input for lane change execution control. This multi-functionality allows the system to achieve high reliability across different operational contexts without proportionally increasing processing time for each specific function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances the accuracy of determining the intention of following vehicles to give way, allowing for safer and more appropriate lane change decisions, reducing the risk of collisions and improving traffic flow.
Implementation Method 1
information of a following other vehicle that is a vehicle traveling on a lane different from a traveling lane of the vehicle and is traveling behind the vehicle and information of a preceding other vehicle that is traveling ahead the vehicle and the following other vehicle
Implementation Method 2
acquire information outside a vehicle... information of a following other vehicle... and information of a preceding other vehicle
Data Source
AI summary
An estimation unit, if an acquisition unit acquires, as information outside a vehicle, information of a following other vehicle that is a vehicle traveling on a lane different from a traveling lane of the vehicle and is traveling behind the vehicle and information of a preceding other vehicle that is traveling ahead the vehicle and the following other vehicle, estimates, based on a behavior of the following other vehicle to the preceding other vehicle and a behavior of the following other vehicle to the vehicle, whether the behavior of the following other vehicle allows a lane change of the vehicle to enter between the preceding other vehicle and the following other vehicle.