Rear Road Surface Illumination for Following Vehicle Avoidance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing rear-road surface illumination techniques are not effective in making emergency stops or decelerations visible to following vehicles, especially in varying environments, and fail to intuitively convey the driver's intention to the following vehicle.
Innovation Solution
A rear-road surface illumination apparatus that includes a vehicle information acquisition unit, an emergency stop detector, a rear-end collision avoidance determiner, and a controller to illuminate the rear road surface with specific light patterns that indicate the need for the following vehicle to avoid or decelerate, using projection or laser technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hazard lamps are turned on or characters like 'STOP' are illuminated on the rear road surface, then the driver's intention is conveyed to following vehicles, but the visibility and effectiveness are reduced depending on environmental conditions
Solution Approach 1:
The patent projects illumination patterns directly onto the road surface behind the vehicle, transitioning from traditional front-facing or side-facing light sources to a rearward projection system. This dimensional change allows the indication to be viewed from below by following vehicle drivers, improving visibility regardless of ambient lighting conditions that affect traditional rear lamps.
Solution Approach 2:
The road surface acts as an intermediary medium to convey the emergency stop indication. Instead of directly illuminating the following vehicle or its driver, the system projects patterns onto the road surface, which then serves as a visual mediator that the following driver can perceive, enhancing adaptability to various environmental conditions.
2Loss of information
If the road surface is illuminated with characters like 'STOP', then information is transmitted to following vehicles, but the following driver must gaze at and decipher the characters, preventing intuitive understanding
Solution Approach 1:
The patent employs different illumination colors (such as red, yellow, green) to convey different meanings and urgency levels. This visual coding system allows following drivers to intuitively understand the situation without needing to read or decipher characters - red indicates stop/danger, yellow indicates caution, and green indicates safe passage, enabling immediate intuitive comprehension.
Solution Approach 2:
The patent extracts the essential meaning from complex character displays and represents it through simplified visual patterns and symbols. Instead of requiring drivers to read text like 'STOP', the system uses universally recognizable visual cues such as circular patterns, directional arrows, and color codes that can be processed intuitively and immediately.
3Area of stationary object
If only the road surface is illuminated with a display showing a dangerous region, then the dangerous area is marked, but it is difficult to notify following drivers about why it's dangerous and what action is required
Solution Approach 1:
The illumination display is segmented into multiple functional zones with different patterns and colors. The system divides the road surface indication into: (1) a warning zone with specific patterns indicating danger, (2) an action guidance zone with directional cues showing required driver responses, and (3) an information zone conveying the reason for the warning. This segmentation allows simultaneous transmission of multiple information types.
Solution Approach 2:
The illumination patterns are dynamic and change based on the vehicle's state and the required action. The system uses animated or changing patterns - such as pulsing lights for immediate danger, rotating patterns for caution, or directional flowing patterns for guidance - enabling following drivers to understand both the reason for the warning and the required action through the evolution of the visual display.
Data Source
AI summary
A rear-road surface illumination apparatus is provided which includes: an avoidance determiner 30 to determine whether to provide a display to induce a following vehicle to avoid a vehicle, on the basis of vehicle information; and a controller 9 to cause an illumination light 10 to illuminate a rear road surface with light having illumination information that induces the following vehicle to avoid the vehicle when the avoidance determiner 30 determines to provide a display to induce the following vehicle to avoid the vehicle. Therefore, the rear-road surface illumination apparatus can indicate the existence of the vehicle to the following vehicle, to give the existence of the vehicle prominence, and can also make it easy to notify the driver of the following vehicle about what the driver of the vehicle desires the driver of the following vehicle to do.