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A method for dynamic optimization of intersection signals based on Internet data

A dynamic optimization and intersection signal technology, applied in the direction of traffic signal control, can solve problems such as the inability to directly apply Internet traffic operation status, and achieve the effect of ensuring the safety of pedestrians crossing the street and reducing space-time conflicts

Active Publication Date: 2021-01-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional signal timing optimization methods mostly rely on traffic flow information at intersections, and cannot directly apply traffic operating status provided by the Internet.

Method used

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  • A method for dynamic optimization of intersection signals based on Internet data
  • A method for dynamic optimization of intersection signals based on Internet data
  • A method for dynamic optimization of intersection signals based on Internet data

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Embodiment 1

[0071] On the premise that there is only Internet traffic operation status information on the intersection, and for the scenario where traditional signal timing strategies cannot directly apply such data, a real-time optimization method for single intersection signals oriented to Internet data (average travel speed) is proposed. Methods After comprehensively considering the shortcomings of the traditional signal timing method at single intersections, the real-time Internet traffic operation status data is introduced to improve the efficiency of the intersection signal timing scheme. The intersection signal dynamic optimization method adopts the periodic optimization method, which not only meets the signal timing optimization requirements of the intersection itself, but also can take into account the constraint requirement that the periods between adjacent intersections should be consistent when coordinated control of arterial roads or areas is required in the future. . In the ...

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Abstract

The invention discloses a dynamic intersection signal optimization method oriented to Internet data. The method mainly comprises three stages including basic timing principle design, Internet data processing and timing scheme generation. The basic timing principle design mainly comprises giving basic parameters such as a phase division principle and shortest pedestrian time. The Internet data processing mainly comprises calculating a traffic operation index and an operating state level for signal optimization on the premise that only Internet-provided average travel speeds of all directions ofan intersection exit. The timing scheme generation comprises based on the set basic principle and the estimated traffic operation state, performing cycle calculation and phase time design and finallyobtaining the complete signal timing scheme of the intersection and continuously performing dynamic optimization according to new data. The invention provides an application method oriented to Internet data on the premise of lack of traditional detection information at the intersection, which improves the efficiency of a real-time timing scheme of the intersection signal lights, and effectively deals with fluctuations and unexpected situations of traffic demands.

Description

technical field [0001] The invention relates to the technical field of urban intelligent traffic systems, in particular to a method for dynamically optimizing intersection signals facing Internet data. Background technique [0002] In the face of the rapid growth of urban motor vehicle ownership and residents' travel demand, the supply capacity of urban traffic is far less than the growth of traffic demand. Coupled with frequent accidents, traffic congestion in small and medium-sized cities has gradually begun to intensify, and some core areas are also prone to regional Congestion or local traffic paralysis, especially in the morning and evening peak hours, the afternoon before holidays, large-scale events, etc. When urban road network construction, traffic engineering design, and infrastructure construction tend to be stable, the preferred countermeasures to further improve traffic operation efficiency focus on signal control optimization. At present, due to the influence ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08G1/08
CPCG08G1/08
Inventor 林永杰徐建闽冯斌
Owner SOUTH CHINA UNIV OF TECH
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