Bus Mirror Arm Lighting for Low-Visibility Safety
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Solution Overview
Problem
School buses face challenges in ensuring passenger safety during boarding and disembarking, particularly in low visibility conditions, due to limited visibility of children around and behind the vehicle, which existing mirror and camera systems cannot adequately address.
Innovation Solution
The implementation of a lighting system comprising strip lighting along the sides and underside of the bus, down-pointing floodlights, and a telescoping crossing gate, along with a control system that activates lights and alerts based on door opening and motion detection, to enhance visibility and safety by illuminating the area around the bus and guiding passengers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If mirror systems and camera systems are used to monitor children around the bus, then the driver's ability to detect children is improved, but visibility in low light conditions remains insufficient
Solution Approach 1:
The lighting system is activated automatically when the bus stops and doors open, providing illumination before children need to board or alight. This preliminary lighting action ensures the area around the bus is well-lit during critical boarding/disembarking operations, directly addressing the visibility problem in low light conditions
Solution Approach 2:
The patent introduces lighting strips and floodlights as intermediary elements between the bus and the surrounding environment. These lighting devices mediate the visibility issue by actively illuminating the area around the bus, complementing the passive mirror and camera systems that alone cannot provide sufficient visibility in dark conditions
2Illumination intensity
If lighting strips are mounted along the side and underside of the bus, then illumination of the area around the bus is improved, but the complexity of the lighting system increases
Solution Approach 1:
The lighting system is segmented into multiple independent components: lighting strips mounted along the sides of the bus, additional lighting strips along the underside, and floodlights positioned at the front and rear. This segmentation allows each component to serve a specific illumination purpose and can be controlled independently, managing system complexity through modular design
Solution Approach 2:
The lighting system serves multiple functions simultaneously: it illuminates the area around the bus for driver visibility, provides warning to pedestrians and other drivers, and enhances the effectiveness of mirror and camera systems. This multi-functionality justifies the added complexity by delivering comprehensive safety benefits
3Difficulty of detecting and measuring
If floodlights are positioned to illuminate the area around the bus, then visibility for the driver is improved, but light reflection into the driver's eyes increases
Solution Approach 1:
The floodlights are positioned and angled to provide localized illumination specifically to the areas where children board and alight, rather than uniformly illuminating all directions. This localized lighting approach improves driver visibility of critical zones while minimizing light reflection into the driver's eyes by controlling the direction and distribution of light
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
The lighting system significantly improves visibility for the driver, reduces the risk of accidents by illuminating areas around and under the bus, and provides clear guidance to passengers through visual and auditory signals, ensuring safer operations in various weather conditions.
Implementation Method 1
a light member positioned behind the mirror lens positioned to emit light through the at least one clear portion
Data Source
AI summary
A light source along the mirror mounting arm of a school bus or other passenger vehicle to reduce the risk of people or other objects being injured by the school bus. The light source may be mounted directly on the mirror mounting arm or embedded within a mirror mount. The light source may be focused downward to illuminate the ground and may provide vehicle status information and guiding information. Additionally the light source may sweep the ground back and forth or be directed under the control of the driver. The light source may be activated automatically when movement is detected near the vehicle.