Device for evaluating the continued existence of traffic signals for pedestrian crossings and method for evaluating the continued existence of traffic signals for pedestrian crossings

JP2026111215AActive Publication Date: 2026-07-03KYOSAN ELECTRIC MFG CO LTD
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
KYOSAN ELECTRIC MFG CO LTD
Filing Date
2024-12-23
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Pedestrians often ignore red pedestrian signals at night in low-traffic conditions, leading to severe collisions with vehicles that do not slow down due to green vehicle signals, especially in areas with decreased traffic volume after new road constructions.

Method used

A device comprising a lighting color detection unit, pedestrian detection unit, and processing unit evaluates the retention of pedestrian crossing traffic signals by counting pedestrians who observe or ignore the signals, determining if the signal should be maintained or removed based on a threshold ratio of ignored signals.

Benefits of technology

Enables evaluation of pedestrian crossing traffic signal existence, reducing collisions by allowing administrators to remove signals where pedestrians frequently disregard them, ensuring safer pedestrian crossings.

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Abstract

This invention provides a device for evaluating the continued existence of traffic signals for pedestrian crossings, which evaluates whether existing pedestrian signal lights remain in place. [Solution] The pedestrian crossing traffic signal retention evaluation device 1 is installed near an existing pedestrian crossing traffic signal on a road and consists of a lighting color detection unit that detects the lighting color of the pedestrian signal light, a pedestrian detection unit that detects pedestrians crossing the pedestrian crossing H, and a processing unit connected to the lighting color detection unit and the pedestrian detection unit that performs a retention evaluation of the pedestrian crossing traffic signal. The processing unit counts the number of pedestrians crossing the pedestrian crossing who comply with the lighting color (first number A) and the number of pedestrians who ignore the lighting color (second number B), and calculates the ratio P of the second number B to the total number of the first and second numbers A and B. Whether or not the pedestrian crossing traffic signal will remain in operation is evaluated based on whether or not this ratio P is above a threshold.
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