Vehicle Control System Diverging Lane Path Generation
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Solution Overview
Problem
Existing vehicle control systems cause discomfort and psychological anxiety in drivers when changing lanes on diverging roads with multiple lanes, as they often require unnecessary lane changes and follow paths different from manual driving.
Innovation Solution
A vehicle control system that generates a target path based on a diverging partition line to change from a main lane to a second diverging lane closer to the main lane, reducing the number of lane changes by setting a lane change start and end point and using a virtual partition line to specify the diverging partition line, even without continuous lane markings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle control system changes lanes to the outermost diverging lane first, then the lane change can be completed, but the number of lane changes increases and driver comfort decreases
Solution Approach 1:
Instead of changing to the outermost diverging lane first (conventional approach), the system inverts the sequence by directly changing to the target diverging lane closer to the main lane. This is achieved by generating a target path that crosses the diverging partition line directly to the second diverging lane, eliminating unnecessary intermediate lane changes and reducing the total number of lane changes from two to one.
2Reliability
If the vehicle follows the conventional path through the outermost lane, then the lane change is achieved, but the vehicle behavior differs from manual driving causing psychological anxiety
Solution Approach 1:
The system copies the driver's intended manual driving behavior by directly transitioning to the target diverging lane as the driver would naturally do. The target path generation unit creates a path that mirrors manual driving patterns by crossing the diverging partition line directly to the second diverging lane, making the automated vehicle behavior consistent with driver expectations and reducing psychological anxiety.
3Ease of manufacture
If the system uses existing lane markings, then lane detection is straightforward, but it cannot generate target paths when lane markings are discontinuous
Solution Approach 1:
The system introduces a diverging partition line as an intermediary element that connects the main lane to the target diverving lane even when traditional lane markings are discontinuous. The diverging partition line acts as a virtual guide that enables target path generation across lanes without requiring continuous physical lane markings, thus bridging the gap between detection simplicity and path generation versatility.
Data Source
AI summary
A vehicle control system includes a controller for generating a target path for the vehicle to change a lane from a main lane to a diverging lane in a diverging zone from a diverging start point to a diverging end point, and causing the vehicle to travel so as to follow the target path. Here, the diverging lane include a plurality of lanes divided into a first diverging lane farthest from the main lane and a second target diverging lane closer to the main lane than the first diverging lane. The controller is configured to generate the target path based on a diverging partition line that partitions the main lane and the diverging lane in the diverging zone when traveling from the main lane through the second diverging lane of the diverging lane toward a destination.