Driver Presentation Control for Autonomous-to-Manual Handover
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Solution Overview
Problem
In autonomous driving systems, drivers may not recognize the need to switch from autonomous driving to manual driving when approaching sections where autonomous travel is not permitted, leading to discomfort and reduced convenience.
Innovation Solution
A presentation control device and program that determine when to interrupt a secondary task performed by the driver and adjust the method of presenting content associated with that task, providing options for the driver to select how to interrupt the task, and notifying the driver of changes in their periphery monitoring responsibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If autonomous driving operation is implemented, then productivity is improved, but reliability deteriorates because drivers may not recognize when to switch to manual driving
Solution Approach 1:
The presentation control device performs preliminary actions by notifying the driver in advance before the vehicle enters a section where autonomous driving is not permitted. The notification is displayed at a timing that allows the driver to prepare for the upcoming mode switch, ensuring the driver recognizes the need to switch to manual driving before it becomes critical.
Solution Approach 2:
The system implements feedback by monitoring the vehicle's location relative to sections where autonomous driving is permitted and actively notifying the driver when approaching such sections. This feedback loop ensures the driver is aware of the upcoming restriction and can prepare to take control of the vehicle.
2Reliability
If information is presented to driver, then reliability is improved, but device complexity increases
Solution Approach 1:
The presentation control device leverages the existing display device already present in the vehicle, making it multi-functional by using it both for normal vehicle information display and for autonomous driving mode switch notifications. This approach avoids adding dedicated notification hardware, thereby limiting the increase in device complexity.
3Ease of operation
If notification timing is optimized, then ease of operation is improved, but loss of time increases due to earlier notification
Solution Approach 1:
The notification is displayed at a predetermined timing that balances the need for driver preparation with minimizing unnecessary early notification. The timing is set to provide sufficient advance notice for the driver to prepare for mode switching while avoiding excessive lead time that would result in unnecessary loss of time.
Data Source
AI summary
An HCU is to be used in a vehicle including an autonomous driving operation, and includes a function of a presentation control device that controls presentation of information to a driver of the vehicle. The presentation control device determines interruption of a second task other than driving permitted to the driver in an autonomous traveling period where the vehicle travels by the autonomous driving operation. Based on the interruption determination of the second task, the HCU changes a provision method of content provided in association with the second task in the autonomous traveling period.