Vehicle Lane-Change Control Using Front-Vehicle Start Prediction
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Solution Overview
Problem
Vehicle control systems often miss opportunities for lane changes due to the immediate disappearance of available space after initiating movement.
Innovation Solution
A vehicle control method and device that acquire surrounding information to identify an entry position on an adjacent lane, determine the travel states of nearby vehicles, and predict when a stopped front vehicle will start moving, allowing the vehicle to wait and then move to the entry position when the front vehicle is predicted to begin traveling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle control device starts moving the vehicle after detecting the space, then the vehicle can enter the lane, but the space may disappear immediately after movement starts, causing the lane change opportunity to be missed
Solution Approach 1:
The control device performs preliminary actions by detecting the start of the front vehicle's movement before actually initiating the lane change. The device monitors the front vehicle's travel state and predicts its movement, then starts the lane change maneuver in advance based on this prediction, ensuring the vehicle enters the lane before the space disappears
Solution Approach 2:
The control device continuously monitors the travel state of the front vehicle and uses this feedback to adjust the lane change timing. By detecting changes in the front vehicle's state (acceleration, position changes), the system adapts the lane change execution timing to match the actual space availability, preventing missed opportunities
2Reliability
If the vehicle waits at the standby position until the front vehicle moves, then the space is confirmed available, but time is lost waiting
Solution Approach 1:
Instead of passively waiting for the front vehicle to move, the control device performs preliminary detection of the front vehicle's travel state and predicts its movement. This allows the system to prepare for lane change in advance and execute it at the optimal moment, converting passive waiting into active preparation
Solution Approach 2:
The control device dynamically adjusts the lane change timing based on the front vehicle's actual movement state. Rather than using a fixed waiting period, the system continuously monitors and adapts the lane change execution timing to the real-time behavior of the front vehicle, optimizing the balance between confirmation reliability and time efficiency
Data Source
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AI summary
A vehicle control method executed includes acquiring surrounding information of the subject vehicle by a sensor includes, specifying an entry position located on a second lane adjacent to a first lane where the subject vehicle travels in accordance with the surrounding information of the subject vehicle, specifying a front vehicle located front the entry position and a rear vehicle located rear the entry position, determining the travel state of each of the front vehicle and the rear vehicle, determining whether there is a space for the subject vehicle to enter at the entry position, predicting whether the front vehicle starts to travel when the front vehicle and the rear vehicle are determined to be stopped and no space is determined at the entry position, and starting to move the subject vehicle to the entry position when the front vehicle is predicted to start traveling.