Autonomous Driving Takeover Timing Under Dynamic Traffic
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Solution Overview
Problem
Existing autonomous driving systems often fail to timely notify drivers of the need to take over manual control, especially in dynamic traffic conditions, leading to potential safety risks and driver discomfort.
Innovation Solution
An autonomous driving assistance device that adjusts the timing of requesting driver take-over based on real-time traffic status and navigation data, providing voice guidance at predetermined points and altering the change request timing to ensure smooth transitions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If autonomous driving systems use fixed timing for requesting driver take-over, then the system operation is simple and stable, but the system cannot respond timely to dynamic traffic conditions leading to safety risks
Solution Approach 1:
The patent implements dynamic adjustment of take-over request timing based on real-time traffic conditions. The system calculates adjusted timing by combining basic timing (distance/speed) with traffic status-based adjustments, allowing the take-over request timing to adapt dynamically to changing traffic situations rather than using fixed predetermined timing.
Solution Approach 2:
The system continuously monitors traffic status and uses this feedback to adjust take-over request timing. By acquiring real-time traffic information and comparing it with basic timing calculations, the system provides closed-loop control that responds to actual driving conditions, improving safety while maintaining manageable complexity through structured feedback processing.
2Ease of operation
If autonomous driving systems notify drivers early for manual take-over, then drivers have sufficient time to prepare, but the notification may occur too early causing driver discomfort and reduced responsiveness
Solution Approach 1:
The system adjusts the timing parameter of take-over requests based on traffic conditions. By modifying the notification timing parameter dynamically - extending it in complex traffic situations and reducing it in simple situations - the system optimizes both driver comfort and response time according to actual driving context.
Solution Approach 2:
The notification timing is made dynamic rather than static. The system calculates optimal notification timing by combining basic timing with traffic status adjustments, allowing the take-over request to be issued at the most appropriate moment for each specific traffic situation, balancing driver preparation time with responsiveness.
Data Source
AI summary
A driving assistance device is configured to assist driving of a vehicle having an autonomous driving function. A traffic status acquisition unit is configured to acquire a traffic status in a section between a present location of the vehicle, which drives in automatic operation in an automatic operation feasible section, and an end point of the automatic operation feasible section. The automatic operation feasible section is set as a limited domain in advance on map information. A timing determination unit is configured to alter change request timing, at which a change request is made to request a driver to make a driving change from the autonomous driving function to the driver, according to the traffic status acquired by the traffic status acquisition unit.