In-Cabin Driving Evaluation Display for At-a-Glance Limit Awareness
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Solution Overview
Problem
Existing display control systems for evaluating driving skills do not effectively convey evaluation results to drivers, making it difficult for them to comprehend their performance simply by glancing at the display.
Innovation Solution
A display control device and method that acquires and counts driving evaluation items, displays them in a vehicle cabin, and visually shows the remaining number of times until the permissible limit, using symbols or color changes to highlight approaching limits and scores, allowing drivers to instantly understand their performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If acceleration data is displayed as a pie chart, then the display contains detailed measurement information, but the driver cannot comprehend the evaluation results simply by glancing at the display
Solution Approach 1:
The display information is segmented into multiple hierarchical levels: (1) Overall evaluation result (S/A/B/C grades), (2) Category-level summaries (acceleration, steering, braking), and (3) Detailed measurement data. This segmentation allows drivers to quickly grasp the main evaluation result while providing access to detailed information when needed, resolving the contradiction between comprehensibility and information completeness.
Solution Approach 2:
The most critical information (overall evaluation grade and remaining times) is extracted and displayed prominently in large, easily visible formats. Less critical detailed measurement data is separated into expandable sections or secondary display areas. This extraction principle ensures that the primary comprehension goal is achieved immediately while detailed information remains accessible.
2Loss of information
If detailed measurement data is displayed, then complete evaluation information is provided, but the display becomes complex and difficult to understand at a glance
Solution Approach 1:
Different parts of the display have different information densities and visual prominence. The overall evaluation grade and remaining times use large fonts and prominent positioning for immediate comprehension. Detailed measurement data uses smaller fonts and less prominent positioning. This local quality differentiation allows the display to provide complete information while maintaining ease of comprehension for the most important metrics.
Solution Approach 2:
The display utilizes multiple visual dimensions (font size, color intensity, positioning hierarchy, graphical vs. textual representation) to encode information importance. Critical information occupies the primary visual dimension (large, central), while detailed data is placed in secondary dimensions (smaller, peripheral). This dimensional organization allows complete data presentation without compromising comprehension ease.
3Ease of operation
If the display shows only evaluation grades, then comprehension is simplified, but detailed measurement information is lost
Solution Approach 1:
The display presents the overall evaluation grade and key summary information first (preliminarily) in a prominent position, allowing immediate comprehension. Detailed measurement data is organized and ready for access in expandable sections or secondary display areas. This preliminary action ensures that the most important information is conveyed first while detailed data remains available when the driver needs it.
Data Source
AI summary
A display control device includes one or more processors configured to: acquire information regarding a plurality of driving evaluation items set in advance; count, as the number of times of measurement, the number of times that at least one of a vehicle state and a driving state meets each of the driving evaluation items while a driver is driving a vehicle; display the driving evaluation items in a display region in a vehicle cabin; and visually display information relating to the remaining number of times that is a difference between the permissible number of times set for each of the driving evaluation items and the number of times of measurement.