Curved-Road Lane Change Control for Rear-User Sensing
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Solution Overview
Problem
Existing driving assistance systems struggle to effectively sense different road users during lane changes, particularly on curved roads, due to blind spots created by following vehicles, which can lead to difficulties in anticipating interactions with rear vehicles.
Innovation Solution
A driving assistance system that plans lane changes for a host vehicle on curved roads, controlling its turning posture to keep predicted interacting road users within a sensing area before the change, using coordinated control of acceleration, braking, and steering to ensure continuous sensing of rear users.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the host vehicle performs a lane change on a curved road, then the lane change maneuver can be completed, but blind spots are created that prevent sensing of rear road users
Solution Approach 1:
The system performs preliminary sensing of the curved road environment and predicts potential blind spots before the lane change maneuver begins. By anticipating the sensing gaps that will occur during the turn, the system can take preventive measures such as adjusting the turning posture or extending sensing duration to ensure rear road users are not missed.
Solution Approach 2:
The system dynamically adjusts the host vehicle's turning posture during the lane change maneuver on the curved road. By modulating the steering angle and turning radius in real-time, the system optimizes the vehicle's orientation to minimize blind spot formation while still completing the lane change, thereby maintaining sensing capability of rear road users throughout the maneuver.
2Ease of operation
If the host vehicle changes turning posture during lane change on curved road, then lane change can be executed, but road users may move out of sensing area
Solution Approach 1:
The system ensures continuous sensing of road users throughout the lane change maneuver by maintaining uninterrupted detection of interacting road users. The sensing system operates continuously during the posture changes, and the system extends the sensing duration beyond the immediate turn to account for road users who may enter or exit the sensing area during the maneuver.
Solution Approach 2:
The system employs feedback mechanisms where the sensing system continuously monitors the presence and position of road users in and around the sensing area. This real-time information feeds back to the control system, which adjusts the turning posture and sensing parameters accordingly to ensure road users are not lost during the lane change execution on the curved road.
Data Source
AI summary
A driving assistance system, a driving assistance method, or a non-transitory computer-readable storage medium storing a driving assistance program for assisting driving of a host vehicle plans a lane change in the host vehicle traveling on a curved traveling road including a plurality of traveling lanes in parallel, and control the host vehicle to have a specific turning posture that keeps a different road user predicted to interact with the host vehicle within a sensing area behind the host vehicle before lane change.