Autonomous Vehicle Lighting Control for Lane Change Safety
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Solution Overview
Problem
During autonomous driving, emergency lights and turn signals may not be effectively communicated to other vehicles due to overlapping light operations, potentially leading to dangerous situations, especially during lane changes.
Innovation Solution
An autonomous vehicle system that integrates an autonomous driving control device, user input device, and body control device to manage emergency light and turn signal operations based on the vehicle's travel situation, ensuring that necessary flashing states are maintained and user inputs are suppressed or acted upon appropriately to prevent conflicts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If emergency light is flashed during autonomous driving to indicate abnormal situation, then safety warning to other vehicles is improved, but turn signal light operation becomes hidden and lane change communication is lost
Solution Approach 1:
The system dynamically switches between emergency light mode and turn signal light mode based on the detected travel situation. When a lane change is detected during emergency light operation, the system transitions to turn signal light operation to communicate the lane change intention, and vice versa. This dynamic adaptation resolves the contradiction by ensuring the appropriate light mode is active for each specific situation.
Solution Approach 2:
The system changes the operational parameter of the lighting system from emergency light flashing to turn signal light flashing based on the travel situation. This parameter change allows the system to maintain effective communication with other vehicles by selecting the appropriate light mode (emergency or turn signal) depending on whether the situation requires general warning or directional indication.
2Ease of operation
If user input is allowed during autonomous driving, then user control flexibility is improved, but conflict with autonomous driving control may occur
Solution Approach 1:
The system implements feedback by continuously monitoring the travel situation and comparing it with the current light operation mode. When a conflict is detected between user input and autonomous driving control based on the current situation, the system provides feedback to suppress the conflicting input. This ensures user flexibility is maintained when appropriate while preventing control conflicts that would compromise safety.
Solution Approach 2:
The system applies preliminary anti-action by suppressing user inputs that would create conflicts with autonomous driving control before the conflicts can occur. By detecting potential conflicts in advance based on the current travel situation and active light operation, the system prevents contradictory actions from being executed, thereby maintaining reliability while preserving user flexibility for non-conflicting inputs.
Data Source
AI summary
An autonomous vehicle includes: an autonomous driving control device configured to request control of an emergency light or a turn signal light in consideration of a travel situation during autonomous driving; a user input device configured to sense a user input; and a body control device configured to flash the emergency light or the turn signal light in response to the request of the autonomous driving control device, and to control the emergency light or the turn signal light in response to the user input when the user input is sensed while flashing the emergency light or the turn signal light.