Autonomous Driving Handover Control for Safe Manual Switching
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Solution Overview
Problem
Existing autonomous vehicles lack a safe method for switching from autonomous driving mode to manual driving mode, leading to potential collisions due to unexpected driving environments, such as sudden overtaking or braking by nearby vehicles.
Innovation Solution
An autonomous driving controller determines whether a driver requests switching to manual driving mode while driving or after stopping, and safely transitions the vehicle to a designated lane or safe place based on surrounding conditions, using communication with a control center to ensure a safe environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If switching to manual driving mode is performed unconditionally when driver requests, then ease of operation is improved, but safety deteriorates due to sudden driving environment changes
Solution Approach 1:
The system performs preliminary actions by automatically changing lanes to a safe lane or moving to a safe place before switching to manual driving mode. This ensures that the vehicle is in a safe state before the driver takes over, preventing collisions during mode transition.
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 surrounding driving environments and performing intermediate actions (lane changes, stopping) to ensure safety before allowing mode switching.
2Reliability
If mode switching is delayed until reaching safe lane or place, then safety is improved, but loss of time increases
Solution Approach 1:
The system performs preliminary lane changes or movements to safe locations in advance, so that when mode switching is requested, the vehicle is already positioned safely or can quickly reach a safe position, minimizing time loss.
Solution Approach 2:
The system dynamically adjusts the mode switching timing based on real-time driving conditions. If the surrounding environment is safe, switching can occur immediately; if not, the system performs necessary maneuvers first, making the process adaptive and time-efficient.
3Reliability
If automatic lane changing is performed to reach safe lane, then safety is improved, but device complexity increases
Solution Approach 1:
The autonomous driving controller performs multiple functions: it monitors driving environments, determines safe lanes or places, executes lane changes, and manages mode switching. This multi-functionality reduces the need for separate dedicated systems, managing complexity while ensuring safety.
Solution Approach 2:
The system continuously monitors surrounding driving environments and uses this feedback to determine whether to perform lane changes or move to safe places before mode switching. This feedback mechanism ensures safety without requiring overly complex predetermined control logic.
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.