Driving Assist Device Lane Change Control Near Map Border
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Solution Overview
Problem
Autonomous vehicles may continue traveling in a passing lane for longer than anticipated when crossing an area border between regions with and without high-precision map information, leading to inefficient route changes.
Innovation Solution
A driving assist method and device that designates areas where autonomous lane changes are possible (first area) and not possible (second area), using a controller to determine the vehicle's location and proximity to the area border, and assists lane changes to maintain travel in a non-passing lane when entering the first area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If autonomous lane change control is executed based on high-precision map information, then lane change accuracy is improved, but travel time in passing lanes increases when crossing area borders
Solution Approach 1:
The control device performs preliminary actions by determining the host vehicle's position relative to the area border in advance, and when the vehicle is in a predetermined range from the border, proactively controls lane changes to non-passing lanes before the vehicle actually crosses the border into the area without high-precision map information. This prevents the vehicle from continuing to travel in passing lanes longer than necessary.
Solution Approach 2:
The control device continuously monitors and determines the host vehicle's position relative to the area border, using this feedback information to dynamically adjust lane change control decisions. When the vehicle enters the predetermined range from the border, the system feedback triggers control to switch to non-passing lanes, optimizing the balance between maintaining autonomous lane change accuracy and reducing unnecessary travel time in passing lanes.
2Manufacturing precision
If the vehicle maintains autonomous lane change capability in the first area, then lane change control precision is improved, but the vehicle may continue in passing lanes longer when approaching the area border
Solution Approach 1:
The system performs preliminary determination of the host vehicle's position relative to the area border and, when in the predetermined range, proactively initiates lane change control to non-passing lanes. This preliminary action maintains the precision of autonomous lane change control while preventing inefficient continued travel in passing lanes near area borders.
Solution Approach 2:
The control device dynamically adjusts lane change control strategies based on the host vehicle's real-time position relative to the area border. When the vehicle is within the predetermined range from the border, the system dynamically modifies its behavior to prioritize transitioning to non-passing lanes, thereby optimizing route efficiency while maintaining control precision in the first area.
Data Source
AI summary
A driving assist method executes a lane change assist based on a generated target travel route. Upon determining the host vehicle is traveling in a road having several lanes, an determination is made as to whether or not the host vehicle is traveling in a first area where an autonomous lane change can be executed. Next, upon determining that the host vehicle is traveling in the first area, an determination is made as to whether or not the host vehicle is traveling in a predetermined range from an area border, which is a boundary between the first area and a second area where the autonomous lane change cannot be executed. Upon determining the host vehicle is traveling in a predetermined range from the area border, a control for the autonomous lane change is performed so that the host vehicle travels in a traveling lane.