Bus Rear Alert Display Using Stop-Time Prediction and Hazard Sensing
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Solution Overview
Problem
Existing alert message systems for large passenger vehicles do not effectively prevent accidents by failing to adequately warn following vehicles of stoppage times and surrounding conditions, leading to potential unsafe overtaking.
Innovation Solution
An alert message display device comprising a stoppage time prediction mechanism, sensing means, and display control means that predicts stoppage times, senses surrounding conditions, and displays alert messages on predetermined display devices to warn following vehicles of potential hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the image of the front of the large automobile is projected on the display device, then the following vehicle can see the front situation, but the following vehicle is urged to overtake which may cause accident with opposite vehicle or pedestrian
Solution Approach 1:
The system performs preliminary action by predicting the stoppage time in advance and displaying alert messages to following vehicles before they make overtaking decisions. The stoppage time prediction means calculates how long the bus will remain stopped, and this information is used to proactively warn following vehicles, allowing them to plan their actions ahead of time and avoid dangerous overtaking maneuvers.
Solution Approach 2:
The alert message display device acts as an intermediary between the bus system and following vehicles. Instead of directly showing the front camera image that might provoke overtaking, the system uses an intermediate alert message that conveys the essential safety information (stoppage time and surrounding conditions) without triggering the harmful overtaking response. This intermediary communication approach achieves the goal of informing while preventing the adverse behavior.
2Loss of time
If the stoppage time for the bus is displayed on the rear display device, then the following vehicle can plan its action, but the following vehicle is more strongly urged to overtake which increases accident risk
Solution Approach 1:
The system applies local quality by providing different types of information to different situations. The alert message is not a uniform display but is dynamically generated based on the specific surrounding conditions detected by the sensing means. When pedestrians or opposite vehicles are detected, the alert message is customized to reflect these local conditions, making the warning more relevant and less likely to trigger unnecessary overtaking.
Solution Approach 2:
The system changes parameters of the displayed information based on surrounding conditions. The alert message content is not static but varies according to the stoppage time prediction and the detected surrounding environment. By adjusting the message parameters (content, timing, intensity) based on real-time conditions, the system effectively communicates necessary information while reducing the urge to overtake in dangerous situations.
3Device complexity
If the alert message is displayed without considering surrounding conditions, then the display is simple, but the alert message is not effective in preventing accidents
Solution Approach 1:
The alert message display device achieves multi-functionality by combining multiple functions into a single system. The display device not only shows stoppage time information but also integrates surrounding condition detection and dynamic message generation. This universal approach allows the same display device to perform multiple functions (information display, hazard detection, adaptive messaging) without requiring separate complex systems, thus maintaining simplicity while improving reliability.
Solution Approach 2:
The system implements feedback by using the sensing means to continuously monitor surrounding conditions and adjusting the alert message content accordingly. The feedback loop connects the surrounding condition detection back to the message display, ensuring that the alert messages are always appropriate for the current situation. This feedback mechanism enhances accident prevention effectiveness without significantly increasing system complexity.
Data Source
AI summary
To suppress the occurrence of accidents when a large passenger vehicle is stopped. This alert message display device is provided with: a stopped time prediction unit that predicts a stopped time for a large passenger vehicle that is stopped or scheduled to be stopped; a sensing unit that senses the surrounding conditions of the large passenger vehicle; and a display control unit that, on the basis of the stopped time and the surrounding conditions of the large passenger vehicle, causes a prescribed display device to display an alert message based on the surrounding conditions of the large passenger vehicle.