Intersection Warning Display for Turning Motorists
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Solution Overview
Problem
Existing traffic warning systems fail to effectively alert motorists turning from a main road into a secondary road of approaching pedestrians or cyclists, particularly those in their blind spot, leading to potential collisions.
Innovation Solution
A display device is positioned on the inside of the curve at intersections, aligned between axes transverse to the main and secondary roads, equipped with sensors and lights that emit an optical warning signal within the motorist's field of vision during the turning process, ensuring the warning is perceived without distracting from the primary traffic flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traffic light system is installed to detect approaching pedestrians and emit warning signals, then the safety of pedestrians crossing the road is improved, but the warning signal is not effectively perceived by drivers during the turning maneuver
Solution Approach 1:
The display device is positioned in a spatial location that utilizes the driver's peripheral vision during the turning maneuver. By placing the display on the inside of the curve at a specific angle between the main road and side road axes, the warning signal enters the driver's field of vision from a dimension that does not obstruct the primary view of the road ahead, thereby solving the contradiction between safety warning and driver perception
Solution Approach 2:
The display device is specifically positioned to target the driver's peripheral vision zone during the turning maneuver, rather than attempting to provide a general warning. This localized approach to information delivery ensures that the warning is perceived exactly when and where the driver needs it most - in their peripheral vision during the critical turning phase
2Loss of information
If the display device is positioned to be visible during the turning maneuver, then the driver can perceive the warning signal, but the device may distract drivers who are not turning
Solution Approach 1:
The display device leverages the dynamic nature of the driver's field of vision during the turning maneuver. As the driver turns, their peripheral vision naturally sweeps across the inside of the curve where the display is positioned. This dynamic positioning ensures that turning drivers perceive the warning while straight-going drivers, whose vision remains focused ahead, do not notice the display
Solution Approach 2:
The warning system is segmented to serve only the specific need of turning drivers rather than all drivers equally. By positioning the display to be visible only during the turning maneuver in the driver's peripheral vision, the system divides the driving population into those who need the warning (turning drivers) and those who do not (straight-going drivers), eliminating unnecessary distraction
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
This configuration significantly reduces the risk of accidents by ensuring the warning is visible to the motorist while turning, even when pedestrians or cyclists are in their blind spot, and can operate independently of traffic lights, enhancing safety at intersections with or without existing control systems.
Implementation Method 1
with at least one sensor for detecting the person
Implementation Method 2
at least one light which emits an optical warning signal
Data Source
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AI summary
Display device (AE) for giving a visual warning to a car driver who is turning off a main road (HS) into a side road (NS) about a person (R1) who is approaching the side road (NS) parallel to the main road (HS), with at least one sensor for sensing the person (R1) and at least one light (L1, L2) which emits a visual warning signal when a person (R1) approaches, characterized in that the emission angle of the light (L1, L2) which emits the visual warning signal is oriented so as to open into the intersection region between a first axis (X) running transversely with respect to the course of the main road (HS) and a second axis (Y) running transversely with respect to the course of the side road (NS).