Autonomous Vehicle Handover Control for Safe Manual Mode Switching
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Solution Overview
Problem
Existing autonomous vehicles lack the ability to safely switch to manual driving mode without interfering with nearby vehicles, particularly in unpredictable driving environments, leading to potential collision risks.
Innovation Solution
An autonomous driving controller determines whether a driver requests switching to manual driving mode while driving or after stopping, and safely navigates the vehicle to a designated lane or place based on surrounding conditions, ensuring a safe transition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If switching to manual driving mode is performed unconditionally regardless of surrounding driving environment, then ease of operation is improved, but safety deteriorates due to potential collision risks
Solution Approach 1:
The system performs preliminary actions by automatically navigating the vehicle to a safe lane or safe place before allowing mode switching. The autonomous driving controller evaluates surrounding environment and executes lane changes or route adjustments in advance, ensuring the vehicle reaches a safe state before the driver takes over manual control.
Solution Approach 2:
The autonomous driving controller acts as an intermediary between the driver's mode switching request and the actual mode transition. It mediates by evaluating the surrounding driving environment, determining safety conditions, and automatically adjusting the vehicle's lane or route before permitting the manual driving mode switch, thus preventing direct unprotected mode transitions.
2Reliability
If the vehicle automatically navigates to a safe lane or place before mode switching, then safety is improved, but loss of time increases due to additional navigation steps
Solution Approach 1:
The system applies partial action by performing only the necessary safety checks and minimal lane adjustments required to reach a safe state for mode switching. Rather than completing full route optimization or extensive maneuvers, the controller executes just enough navigation to ensure safety conditions are met, balancing time consumption with safety requirements.
Solution Approach 2:
The system changes parameters by evaluating multiple candidate lanes or destinations and selecting the one that minimizes navigation time while satisfying safety criteria. The autonomous driving controller adjusts route parameters dynamically, choosing the fastest safe lane or place that allows mode switching without excessive delay.
3Reliability
If the driver must wait for the vehicle to reach a safe lane or place before switching modes, then safety is improved, but productivity decreases due to delayed mode switching
Solution Approach 1:
The system performs preliminary navigation actions automatically upon receiving the driver's mode switching request, initiating lane changes or route adjustments before the driver needs to wait. This preliminary action reduces the waiting time by starting the safety preparation process immediately rather than requiring the driver to delay their mode switching intent.
Solution Approach 2:
The autonomous driving controller provides self-service by automatically handling the navigation to safe lanes or places without requiring continuous driver intervention or waiting. The system independently evaluates safety conditions, executes necessary maneuvers, and manages the mode switching process, freeing the driver from waiting and manual safety monitoring tasks.
Data Source
AI summary
A method of controlling switching to a manual driving mode of an autonomous vehicle, enables switching to the manual driving mode to be safely performed without interfering with a nearby vehicle in a safe lane or a safe place according to a surrounding driving environment by allowing a driver to select between switching to the manual driving mode while driving or switching to the manual driving mode after stopping to switch to the manual driving mode while the autonomous vehicle is driven in an autonomous driving mode.