Driver Vehicle Responsibility Matrix HMI Design
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Solution Overview
Problem
Traditional automated driving systems fail to clearly indicate driver responsibilities across different automation levels, leading to confusion and difficulty for drivers to understand their roles and the vehicle's expectations, especially during mode changes and warning conditions.
Innovation Solution
An automated driving system that displays a Driver and Vehicle Responsibility Matrix (DVR matrix) on a display device, indicating driver and vehicle responsibilities through icons and texts, with notifications for responsibility transitions and warning conditions, allowing drivers to quickly understand their required actions and the current automation level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional HMI uses unrelated icons to represent system status, mode change requests, and warnings, then the system can display multiple types of information, but the driver finds it difficult to process quickly and understand the vehicle's expectations
Solution Approach 1:
The patent combines system status, mode change requests, and warnings into a single unified HMI display location. This merging of previously separate information elements allows the driver to access all critical information in one place, improving comprehension while maintaining comprehensive information display.
Solution Approach 2:
The unified HMI display segments information by spatial location and visual hierarchy, organizing different types of messages (system status, mode changes, warnings) in a structured layout that facilitates quick processing while displaying multiple information types simultaneously.
2Device complexity
If automated driving systems indicate only a level of automation (e.g., Level 3), then the system can simplify status indication, but the driver does not understand what responsibilities the driver has or does not have for each automation level
Solution Approach 1:
The patent introduces an intermediary HMI display that translates automation levels into comprehensible responsibility indicators. This intermediary layer converts the abstract automation level concept into concrete information about driver responsibilities, maintaining simplicity while preventing information loss.
Solution Approach 2:
The HMI display uses color coding to indicate different automation levels and associated driver responsibilities. This visual encoding system maintains simplicity through intuitive color associations while conveying detailed information about what the driver needs to do at each automation level.
3Loss of information
If the system provides detailed information about driver responsibilities and automation levels, then the driver's understanding improves, but the HMI interface becomes more complex and harder to process quickly
Solution Approach 1:
The HMI interface applies local quality by providing different levels of information detail in different spatial regions of the display. Critical responsibility information is prominently displayed with high visual weight, while secondary information is provided in less prominent areas, optimizing both comprehension and processing speed.
Data Source
AI summary
Aspects of the disclosure provide an automated driving system and a method for providing an indication of a driver's responsibilities in a vehicle having an automated driving system. The system includes a display device for displaying information to a driver of the vehicle, and a controller configured to display, at the display device, a driver and vehicle responsibility matrix (DVR matrix). The DVR matrix includes a first set of indicators each indicating a driving responsibility of the driver, a second set of indicators each indicating a driving responsibility of the automated driving system. In one example, the controller is configured to display the DVR matrix corresponding to an automation state.