AR Windshield Traffic Signal Display for Color-Blind Drivers
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Solution Overview
Problem
Current augmented reality head-up displays for vehicles do not effectively provide information about traffic signals in a manner that enhances driver awareness, particularly for drivers with color-vision impairments, as they lack a comprehensive and intuitive method to convey the status and complexity of traffic signals.
Innovation Solution
A system comprising vehicle sensors, a controller, and a display that detects and analyzes traffic signals using cameras, GPS, and communication systems to determine their status and complexity, and projects graphics on the windshield in a size, shape, and location optimized for the driver's view, using augmented reality and transparent windscreen display technologies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional traffic signal information is displayed using conventional HUD or dashboard displays, then drivers can receive traffic signal status information, but the information is not intuitive enough for drivers with color-vision impairments and does not adequately convey traffic signal complexity
Solution Approach 1:
The system uses color-coded graphical icons (red circle for stop, green circle for go, yellow triangle for caution) to represent different traffic signal states. These colors are specifically designed to be distinguishable by drivers with color-vision impairments, transforming the traditional color-dependent traffic light information into a more accessible visual format that enhances driver awareness without losing critical signal status information.
Solution Approach 2:
The system adds a complexity dimension to traffic signal information by displaying additional graphical icons that indicate whether a traffic signal is simple or complex. This dimensional enhancement provides drivers with deeper understanding of the traffic signal status beyond just the basic red-yellow-green states, improving overall information comprehension while maintaining ease of interpretation.
2Ease of operation
If multiple types of traffic signal information are displayed to enhance driver awareness, then driver understanding improves, but the display complexity and information processing requirements increase
Solution Approach 1:
The system segments traffic signal information into distinct, modular graphical icons: a primary status icon (circle or triangle with color coding) and optional complexity indicators. This segmentation allows the display system to present multiple types of information in a structured, organized manner that enhances driver understanding while keeping the display complexity manageable through clear visual separation of information elements.
Solution Approach 2:
The system uses simplified graphical representations (icons) that copy the essential meaning of complex traffic signal information in an easily interpretable format. The graphical icons serve as visual copies of the traffic signal states, translating complex electrical and optical signal data into intuitive visual symbols that improve driver understanding without requiring complex display hardware.
3Reliability
If the system provides comprehensive traffic signal information including complexity indicators, then driver safety improves, but the processing time and computational resources increase
Solution Approach 1:
The system performs preliminary classification of traffic signals into simple and complex categories using pre-defined criteria (such as number of signal phases, presence of pedestrian signals, or intersection configuration). This preliminary action allows the system to quickly determine complexity status without extensive real-time analysis, thereby improving driver safety through comprehensive information while minimizing processing time and computational resource requirements.
Data Source
AI summary
A system for displaying information for a vehicle includes a plurality of vehicle sensors, a display, and a controller in electrical communication with the plurality of vehicle sensors and the display. The controller is programmed to detect a relevant traffic signal in an environment surrounding the vehicle using the plurality of vehicle sensors, receive information about the relevant traffic signal using the plurality of vehicle sensors, determine a status of the relevant traffic signal based on the received information, and display a graphic based on the status of the relevant traffic signal using the display.