A method and system for intelligent traffic control at asymmetric intersections

By collecting and analyzing traffic data in real time and dynamically adjusting traffic light timings, the problem of asymmetrical traffic flow at asymmetrical intersections has been solved, improving traffic efficiency and safety, and adapting to traffic changes at different times and seasons.

CN121393168BActive Publication Date: 2026-06-30CHINA RUILIN ENG TECH CO LTD DONGGUAN BRANCH
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Patent Information

Application Number
CN202511603799.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2025-03-06
Filing Date
2025-11-05
Publication Date
2026-06-30
Estimated Expiration
2045-11-05

AI Technical Summary

Technical Problem

Traditional traffic signal control methods cannot be dynamically adjusted according to real-time traffic flow, resulting in wasted traffic resources and low traffic efficiency at asymmetrical intersections. In particular, when traffic flow is asymmetrical between main roads and side roads, existing intelligent transportation systems cannot effectively handle the situation, leading to excessively long waiting times for vehicles on main roads and low traffic efficiency for vehicles on side roads.

Method used

By collecting real-time traffic flow data from main roads and secondary roads, and using data processing and analysis techniques, the timing of traffic lights is dynamically adjusted. In particular, if there are no vehicles waiting on the secondary roads before the green light on the main road ends, the green light time on the main road is automatically extended. By combining Fourier transform and historical traffic data, the system learns and optimizes signal timing decisions.

Benefits of technology

It improves the efficiency of traffic flow at intersections, reduces vehicle waiting time, alleviates traffic congestion, enhances traffic safety and efficiency, and adapts to traffic flow changes at different times and seasons.

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Abstract

This invention relates to an intelligent signal control method and system for asymmetric intersections, belonging to the field of intelligent traffic control technology. The method dynamically adjusts traffic light timings by collecting real-time traffic flow data from main roads and side roads, utilizing data processing and analysis techniques. Specifically, if there are no vehicles waiting on side roads before the main road's green light ends, the main road's green light time is automatically extended to improve intersection efficiency. The system includes a data detection unit, a data processing unit, a signal control unit, and a data storage unit, capable of real-time monitoring of traffic flow and vehicle queuing, and adjusting signal timings based on real-time data. This invention effectively reduces vehicle waiting time, increases traffic flow, reduces congestion, and improves traffic safety and efficiency.
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