Dynamic traffic influence evaluation method for urban road construction period

Abstract

The invention discloses a dynamic traffic influence evaluation method for an urban road construction period. The method comprises the following steps: S1, determining a traffic influence range of an urban road construction project; S2, acquiring and processing mobile phone signaling data, filtering and denoising the data by matching the base station with the mobile phone signaling data, establishing a user position state table by collecting data in real time, and updating the latest state in real time; S3, setting parameters of a training set and a test set, and predicting the traffic volume and the vehicle speed by using a long-short-term memory neural network; S4, employing VISSIM software to simulate and analyze the saturation of each road section in different construction periods, thequeuing length of the signalized intersection, the average travel time and the average delay, and evaluating the traffic flow operation states in different construction stages. According to the invention, a set of complete dynamic traffic influence evaluation method is formed, and decision support is provided for traffic construction and management departments to implement traffic organization design in different construction stages.

Description

technical field [0001] The invention belongs to the technical field of road traffic and relates to an urban traffic impact evaluation method, in particular to a dynamic traffic impact evaluation method during urban road construction. Background technique [0002] Assessing the traffic impact during road construction is helpful to formulate a reasonable traffic organization plan and is an essential part of road construction. At present, the traffic impact assessment during the construction period is generally completed before the start of construction, which is a static assessment method. Static traffic impact assessment methods generally allocate traffic flow according to the four-stage method, that is, by investigating the road traffic volume before construction, according to the steps of trip generation, trip distribution, mode division and traffic distribution, the road traffic distribution flow in the construction affected area is calculated , and then select the carryi...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a dynamic traffic impact evaluation method during the construction period of urban roads, which overcomes the shortcomings of the static traffic impact evaluation method and solves the problem of only relying on experience and norms to evaluate the entire construction period during the static traffic impact evaluation process. problems with traffic conditions

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