Vehicular Speed Display Emphasis for Driver Comfort
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Solution Overview
Problem
Existing vehicular speed control systems force speed reductions, causing discomfort to drivers by not aligning with their intended speed, especially during transitions from highways to ordinary roads or in low-light conditions, which can lead to unsafe driving practices.
Innovation Solution
A vehicular display control apparatus and method that predicts deviations between sensible and actual speeds, using a display unit to switch to an emphasized speed display when a predetermined speed difference is exceeded, encouraging safe driving practices while reducing driver discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If forced speed reduction control is applied to assist safe driving, then safety is improved, but driver comfort deteriorates due to uncomfortable forced speed reduction
Solution Approach 1:
The system performs preliminary action by displaying speed information in advance before forced speed reduction is applied. The display unit shows the current speed and speed limit difference to the driver beforehand, allowing the driver to mentally prepare and understand the upcoming speed reduction necessity, thereby reducing discomfort while maintaining safety assistance
Solution Approach 2:
The display unit acts as an intermediary between the forced speed reduction control system and the driver. Instead of directly applying forced speed reduction, the system first communicates speed information through the display, serving as a mediator that bridges the automated control system and driver perception, reducing the shock of forced speed reduction
2Loss of information
If speed information is displayed in advance, then driver understanding of speed control improves, but the system complexity increases
Solution Approach 1:
The speed information display is segmented into distinct components: current speed display, speed limit display, and difference calculation display. Each element is separately controlled and presented, making the information processing manageable and the system structure clear, thereby improving driver understanding without excessive complexity
Solution Approach 2:
The display unit serves multiple functions: it displays current speed, speed limit, calculated difference, and provides advance warning. By making the display unit multi-functional, the patent avoids adding separate devices for each function, thereby reducing overall system complexity while comprehensively addressing driver understanding
Data Source
AI summary
A vehicular display control apparatus includes: a condition determination portion that determines whether a deviation prediction condition has been established, the deviation prediction condition being a condition based on which a deviation between a sensible speed for a driver and an actual traveling speed is predicted; a speed difference determination portion that determines whether a speed difference between the actual traveling speed and a speed limit is a switching determination value or larger, and whether a shortage of the traveling speed from the speed limit is the switching determination value or larger; and a switching control portion that switches a speed display indicating the traveling speed to an emphasized display in a case when the condition determination portion determines that the deviation prediction condition has been established, and also when the speed difference determination portion determines that the speed difference is the switching determination value or larger.