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Intersection signal parameter optimization and effect evaluation method based on traffic video data

A technology of signal parameters and video data, used in the control of traffic signals, traffic flow detection, traffic control systems, etc.

Active Publication Date: 2018-09-28
CENT SOUTH UNIV
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  • Abstract
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Problems solved by technology

[0010] The purpose of the present invention is to provide an intersection signal parameter optimization and effect evaluation method based on traffic video data, to solve the problem of optimizing the total travel time, signal cycle and green signal ratio of the traffic system, and to evaluate the optimized results of single intersections and intersection groups. Technical Problems of Traffic Flow Efficiency

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  • Intersection signal parameter optimization and effect evaluation method based on traffic video data
  • Intersection signal parameter optimization and effect evaluation method based on traffic video data
  • Intersection signal parameter optimization and effect evaluation method based on traffic video data

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[0113] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in various ways defined and covered by the claims.

[0114] Concrete operation process of the present invention ( figure 1 )as follows:

[0115] The present invention assumes that the vehicles all belong to the car type, and the inflow rate of all OD (Origin-destination pair) pairs within the research period is a uniform inflow rate. Assume that the statistical time period is a specific, limited period of time required for the OD traffic to complete the travel, for example, from the peak period to the time required for the OD traffic entering the one-hour peak period to complete the travel. It is assumed that the signal lights in the traffic network are all fixed timing signal lights, and the basic control parameters remain unchanged during the statistical period. Assume that under the influence of no oth...

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Abstract

The invention provides an intersection signal parameter optimization and effect evaluation method based on traffic video data, and based on the digitized data recorded by the electronic police system,the theoretical distribution of travel time of the vehicle on the road segment is obtained, and the goal is to achieve the system traffic efficiency and to optimize both the signal period duration and the green signal ratio. The intersection signal parameter optimization and effect evaluation method based on traffic video data can scientifically and reasonably utilize the digital information of the electronic police video system and the like to optimize the signal parameters of the intersection so as to improve the comprehensive traffic capacity at the intersection of the road and achieve thepurposes of traffic safety, smooth and green environmental protection in the range of a single intersection and an intersection group.

Description

technical field [0001] The invention relates to the field of traffic control and management, in particular, to a method for optimizing signal parameters of intersections and evaluating effects based on traffic video data. Background technique [0002] Level intersection is the traffic bottleneck of urban road traffic network, and the delay time of vehicles before the intersection accounts for 20% to 50% of the total travel time. In order to improve the vehicle traffic capacity at the level intersection of urban roads, while adopting traffic engineering methods such as widening the entrance road at the intersection, channelizing, introducing left turn (straight) and waiting for driving, electronic vehicles are also installed at the intersection. The police video system is used to monitor illegal driving behavior near the intersection to ensure smooth traffic flow. [0003] The electronic police system in front of the intersection can also take pictures of vehicles passing th...

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Application Information

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IPC IPC(8): G08G1/04G08G1/08G08G1/081
CPCG08G1/04G08G1/08G08G1/081
Inventor 黎茂盛黎昉薛宏丽史峰
Owner CENT SOUTH UNIV
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