Road section traffic flow time-varying flow prediction method for vehicle-road cooperation

A technology of flow forecasting and vehicle-road coordination, which is applied in the field of road traffic flow forecasting and vehicle-road coordination-oriented time-varying traffic flow prediction in road sections, which can solve the problem of sparse distribution of traffic detection equipment, high construction and maintenance costs, and difficulty in providing large-scale Cross-section flow information and other issues, to achieve the effect of improving the level of road traffic management and improving the ability of accurate perception

Pending Publication Date: 2022-02-11
HOHAI UNIV +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the sparse distribution of traffic detection equipment in the current road section, it is difficult to provide a wide range of section flow information, and only by adding detection equipment will also make the construction and maintenance costs high

Method used

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  • Road section traffic flow time-varying flow prediction method for vehicle-road cooperation
  • Road section traffic flow time-varying flow prediction method for vehicle-road cooperation
  • Road section traffic flow time-varying flow prediction method for vehicle-road cooperation

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Experimental program
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Effect test

Embodiment 1

[0091] The present invention provides a time-varying traffic flow prediction method for road section oriented to vehicle-road coordination, such as figure 1 shown, including the following steps:

[0092] 1) Construct the initial fleet of road sections based on the predicted time span

[0093] According to the collected vehicle and road-related data, divide the road control section, determine the road data collection retrospective period, and construct the initial fleet of road sections;

[0094] Specifically,

[0095] 1-1) Division of road control sections

[0096] The road control section between the data collection section and the predicted section is used as the interval, and it is divided into w sections as follows: figure 2 shown and numbered sequentially;

[0097] 1-2) Determine the retrospective period of road data collection

[0098] According to the collected forecast period in the past L days ([T s , T e ]), the instantaneous speed of each vehicle in the data...

Embodiment 2

[0162] An example is given to further illustrate the time-varying traffic flow prediction method of road cross-section of the present invention for vehicle-road coordination, image 3 Shown is a schematic diagram of the division of the control section of the road section and the control section of the vehicle flow exiting and entering. Next, according to the specific steps of the method for predicting the time-varying traffic flow of a road section based on the vehicle-road coordination of the present invention, the time-varying traffic flow prediction of the target predicted section is obtained by calculation.

[0163] S1: Construct the initial fleet of road sections based on the predicted time span.

[0164] S11: Construct and divide road control sections with the help of actual survey data, specifically the data collection section b, the first control section h, the traffic entry control section g, the traffic exit control section r, and the predicted section p such as im...

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Abstract

The invention discloses a road section traffic flow time-varying flow prediction method for vehicle-road cooperation. The method comprises the following steps of constructing a road section initial motorcade based on a prediction time span; calculating road data acquisition section motorcade operation characteristic parameters; calculating an operation characteristic initial value of the road control section reordering fleet; calculating fleet operation characteristic parameters of a traffic flow driving-out and driving-in control section; and predicting the road section traffic flow time-varying flow. According to the prediction method provided by the invention, the traffic flow condition of the road section can be accurately calculated under the condition of considering the traffic flow time-varying characteristics, so that the capability of accurately sensing the traffic flow time-varying flow of the road section is improved, and the road traffic management level is improved.

Description

technical field [0001] The invention relates to a road traffic flow prediction method, in particular to a road section time-varying traffic flow prediction method oriented to vehicle-road coordination, and belongs to the technical field of intelligent traffic management and control. Background technique [0002] In recent years, with the rapid development of road traffic, highways have played an extremely important role in long-distance travel, urban interconnection, and logistics transportation, ensuring the safety and convenience of our travel. At the same time, the traffic flow management of road traffic has attracted more and more attention and has become the focus of intelligent traffic management. By analyzing the changes in traffic flow at historical moments, it is possible to timely predict the traffic flow at the next moment and implement active management and control. , which is also the key to the transformation of road traffic management from "passive" to "active...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/26G06Q50/30G06F16/2458G06F16/29
CPCG06Q10/04G06Q50/26G06F16/2462G06F16/2474G06F16/29G06Q50/40
Inventor 李锐张鑫洋陈志军张兵曹阳李亚春
Owner HOHAI UNIV
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