Windshield Head-Up Hazard Alerts Aligned to Driver Line of Sight

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Solution Overview

Problem

Existing vehicle safety systems that provide road hazard alerts can distract drivers from the roadway, compromising safety, and there is a need for systems that integrate alerts with the driver's line of sight without causing distraction.

Innovation Solution

A system that uses reflective and augmented head-up displays to project graphical alerts, including augmented reality image overlays and virtual images, on a vehicle's windshield, adjusting projections based on the driver's line of sight to provide road hazard information without diverting attention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of information

If visual alert methods are used to provide road hazard information, then driver awareness of hazards is improved, but driver distraction from the roadway increases

Engineering Contradiction:

Improvedriver awareness of hazardsVSAvoiddriver distraction

Core Design Contradiction:

Loss of informationVSObject-affected harmful factors

Solution Approach 1:

The patent uses the windshield as an intermediary medium to display hazard information. By projecting alerts onto the windshield surface, the system mediates between the hazard detection system and the driver, allowing information delivery without requiring the driver to shift attention to separate displays or devices.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system transitions from traditional 2D display surfaces (dashboards, screens) to the windshield surface, utilizing the third dimension of the driver's field of view. This allows hazard information to be presented in the driver's natural line of sight, integrating alerts with the roadway view rather than separating them spatially.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Ease of operation

If alerts are displayed in the driver's line of sight, then driver focus on the roadway is maintained, but alert visibility and clarity may be reduced

Engineering Contradiction:

Improvedriver focus on roadwayVSAvoidalert visibility

Core Design Contradiction:

Ease of operationVSLoss of information

Solution Approach 1:

The system applies different display characteristics to different regions of the windshield based on local requirements. Critical hazard information is displayed in high-visibility areas within the driver's peripheral or central vision, while less critical information can be placed in peripheral regions, optimizing both visibility and driver focus.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent utilizes color variations to encode different levels of hazard severity and types of information. By using distinct colors for different hazard levels (e.g., red for critical, yellow for caution), the system enhances alert distinguishability and immediate recognition without requiring increased display size or brightness that could cause glare.

Inventive Principle:

Principle #32Color changes

3Loss of information

If multiple types of visual information are displayed simultaneously, then comprehensive hazard information is provided, but visual complexity and potential distraction increase

Engineering Contradiction:

Improvecomprehensive hazard informationVSAvoidvisual complexity

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The system segments hazard information into distinct visual components displayed in organized regions. Different hazard types (vehicles, pedestrians, road conditions) are represented by separate icons or symbols, and multiple hazards are displayed as discrete elements rather than a single complex message, reducing visual clutter while maintaining information completeness.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The display system updates hazard information periodically or event-driven, showing only current and relevant hazards rather than continuously displaying all possible information types. This reduces visual complexity by presenting information in discrete updates rather than constant multi-layered displays.

Inventive Principle:

Principle #19Periodic action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enhances driver safety by providing critical alerts integrated with the driver's view, reducing accidents by allowing the driver to take corrective actions promptly and maintaining focus on the road.

Implementation Method 1

systems that use visual alert methods... providing alerts using the pillar-to-pillar display capabilities may integrate safety alerts with the driver's view

Methodology Applied

Scientific EffectOptical reflection: Reflection

Data Source

PatentUS20260014864A1Road condition warning on reflective and augmented head-up displays

Publication Date: 2026.01.15 GM GLOBAL TECHNOLOGY OPERATIONS LLC

AI summary

A system and method include receiving road data indicating a road hazard moving toward the vehicle, determining, based on the road data, that the road hazard is within a roadway of the vehicle, and determining a distance between the vehicle and the road hazard. The system and method also include receiving driver features of a driver of the vehicle from a driver tracker system, and simultaneously displaying, via head-up displays, a graphical alert alerting the driver of the vehicle to the road hazard, the graphical alert including an augmented reality image overlay and a virtual image, the augmented reality image overlay different from the virtual image.