Driver Jam-State Display for Automated Driving Mode Switching
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Solution Overview
Problem
In automated driving vehicles, drivers lack understanding of when the driving mode is switched and how the vehicle recognizes traffic jams, leading to potential psychological burden and rapid changes in driving conditions.
Innovation Solution
A notification device that displays jam-related parameters and reference values to inform drivers of the necessary changes in traffic conditions for mode switching, using sensors like speed sensors, exterior cameras, and distance measurement sensors to determine the driving mode based on jam degree, and displaying this information on the vehicle's display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If the vehicle switches driving mode based on jam degree recognition, then the automated driving control is optimized for current conditions, but the driver cannot grasp the timing or extent of change in jam state necessary for mode switching
Solution Approach 1:
The notification control part provides feedback to the driver by displaying the current jam related parameter value and reference value on the display device. This allows the driver to understand the current jam state recognition and the extent of change needed for mode switching, resolving the information asymmetry between automated system decisions and driver awareness.
Solution Approach 2:
The notification control part acts as an intermediary between the automated driving control system and the driver. It translates the internal jam degree assessment into visible information (displayed values) that the driver can comprehend, bridging the gap between automated decision-making and driver understanding.
2Adaptability or versatility
If the driving mode is switched based on vehicle's jam recognition, then the driving control is adapted to traffic conditions, but the driver experiences psychological burden due to lack of understanding
Solution Approach 1:
By continuously displaying the jam related parameter value and reference value, the system provides feedback that explains the basis for mode switching decisions. This transparency reduces driver confusion and psychological burden while maintaining adaptive driving control based on actual traffic conditions.
Data Source
AI summary
In a vehicle enabling automated driving, if the value of at least one jam related parameter changing in accordance with a jam degree of surroundings of the vehicle is a value showing a jam degree lower than a reference value corresponding to a reference jam degree, the vehicle is driven in a first driving mode, and if the value of the jam related parameter is a value showing a jam degree higher than the reference value, the vehicle is driven in a second driving mode with a lower degree of contribution of the driver to driving than the first driving mode. A notification device used in the vehicle has a notification control part showing on a display device of the vehicle a display relating to the value of the jam related parameter and the reference value.