Pedestrian Safety Warning System for Zebra Crossings
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Solution Overview
Problem
Pedestrians using electronic devices at zebra crossings are at risk due to their inability to notice traffic signals, as they may not see the indicating lights, especially when looking down.
Innovation Solution
A traffic warning system comprising a user terminal and a monitoring device with sensors, lighting, and communication modules that transmit safety warnings and control the display of the user terminal to alert pedestrians when crossing a zebra crossing, using NFC or RF signals to ensure awareness of traffic signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If pedestrians use electronic devices at zebra crossings, then they can access information and communicate, but they cannot notice traffic signals and are at risk of accidents
Solution Approach 1:
The patent introduces an intermediary system consisting of ground-mounted sensors, wireless communication modules, and portable display devices that mediate between the traffic signal system and the pedestrian. The sensors detect pedestrians using devices, and the portable devices receive and display traffic signal information, allowing pedestrians to access traffic signal information without looking at traditional overhead signals while using their electronic devices.
Solution Approach 2:
The patent replaces the traditional mechanical/visual traffic signal system with an electronic information delivery system. Instead of relying on pedestrians to visually detect overhead traffic lights, the system uses ground-mounted optical or electromagnetic sensors to detect pedestrians and wireless communication to transmit signal information to portable electronic devices, substituting direct visual observation with electronic information transfer.
2Reliability
If traditional traffic signal systems are used, then infrastructure complexity is low, but pedestrians using electronic devices cannot receive timely warnings
Solution Approach 1:
The system enables pedestrians to receive safety warnings through their own personal electronic devices without requiring additional infrastructure at every crossing. The portable display devices are owned and carried by pedestrians themselves, and the system leverages their existing devices rather than requiring them to carry specialized equipment.
Solution Approach 2:
The patent utilizes universal electronic devices that pedestrians already possess for other purposes (smartphones, tablets, wearables) and repurposes them for traffic signal reception. The same device can be used for communication, information access, and now traffic safety warnings, eliminating the need for dedicated specialized equipment.
3Ease of operation
If pedestrians look down at electronic devices, then they can interact with the device interface, but they fail to observe indicating lights
Solution Approach 1:
The patent moves the traffic signal information from the traditional overhead vertical dimension to the ground level horizontal dimension. Instead of requiring pedestrians to look up at overhead signals, the information is delivered through portable devices held at hand level or worn on the body, changing the spatial dimension from which signal information is accessed.
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 system effectively prompts pedestrians to be aware of traffic safety by warning them through visual and auditory means, reducing the risk of accidents by ensuring they notice traffic signals.
Implementation Method 1
Each end of the zebra crossing is configured with at least one signal transmitting device, and the user terminal has at least one signal receiving device. When the user terminal enters a range of the zebra crossing from outside of the range, the signal receiving device receives the predetermined signals transmitted by the signal transmitting device.
Implementation Method 2
using NFC or RF signals to ensure awareness of traffic signals
Data Source
AI summary
A method applied to a pedestrian user terminal for road safety includes detecting whether a display device of the user terminal is in an active mode when predetermined signals are received by the user terminal. A prompt can be transmitted when the display device is in the active mode thus providing a warning to the pedestrian user to cross the road, on the display device he or she is viewing. The display device is deactivated when the display device is determined to be still in the active mode after a predetermined time period that starts from the prompt is transmitted.