Pivoting School Bus Stop Sign for Multi-Angle Visibility
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Solution Overview
Problem
School bus stop signs are not visible to vehicles approaching from the side, posing a safety risk as they exit driveways, parking lots, or side roads when the bus is picking up children.
Innovation Solution
A school bus stop sign apparatus with a pivotally attached first stop sign, an actuator to pivot the sign between expanded and retracted forms, and a second stop sign with an indicator, ensuring visibility from multiple angles by activating and deactivating the signs as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a single stop sign is pivotally attached to the side of the school bus, then the stop sign is visible to vehicles approaching from the front or rear, but the stop sign is not visible to vehicles approaching from the side
Solution Approach 1:
The stop sign system is divided into multiple segments: a first stop sign that pivots perpendicular to the bus for front/rear visibility, and a second stop sign that remains parallel to the bus for side visibility. This segmentation allows each sign to serve different viewing angles simultaneously, resolving the contradiction between visibility and multi-angle adaptability.
Solution Approach 2:
The invention adds a second stop sign in a different spatial dimension (parallel to the bus side) complementing the first stop sign (perpendicular to the bus side). This dimensional addition ensures that vehicles approaching from any direction (front, rear, or side) can see an appropriately oriented stop sign, thereby achieving visibility from multiple angles without compromising the functionality of either sign configuration.
2Reliability
If the stop sign is activated to pivot perpendicular to the bus, then front and rear visibility is improved, but side visibility remains insufficient for exiting vehicles
Solution Approach 1:
The system segments the visibility function into two distinct stop signs: the first stop sign pivots to protect against front and rear approaching vehicles, while the second stop sign remains fixed parallel to the bus to protect against side-approaching vehicles. This segmentation eliminates the harmful factor of side visibility deficiency while maintaining the reliability benefit of activated stop sign visibility.
Solution Approach 2:
The second stop sign acts as an intermediary element that specifically addresses side-approaching vehicles without interfering with the primary function of the first stop sign. This intermediary component bridges the gap in side visibility while the activation component coordinates both signs to ensure comprehensive safety coverage.
3Adaptability or versatility
If a second stop sign with indicator is added parallel to the bus side, then side visibility is improved, but device complexity increases
Solution Approach 1:
The activation component serves multiple functions: it controls the pivoting of the first stop sign, manages the indicator on the second stop sign, and coordinates both signs to work together. This multi-functionality reduces the need for separate control mechanisms for each component, thereby mitigating the increase in device complexity while achieving improved side visibility through the second stop sign.
Data Source
AI summary
A school bus sign with increased visibility is provided. The school bus stop sign apparatus includes at least a first stop sign and a second stop sign. The first stop sign may be pivotally attached to the side of a school bus. The second stop sign is attached to and substantially parallel with the side of the school bus. The second stop sign includes an indicator that allows drivers to sense that the bus is stopped to pick up children. When activated, the first stop sign may pivot 90 degrees and may be substantially perpendicular to the side of the bus. The indicator, such as a light, may be activated on the second stop sign. Therefore, a driver may see that the bus is picking up children from the front, the rear and the side.