Road service level evaluation method based on saturation rate

Abstract

A saturation rate-based road service level evaluation method comprises the following steps of: 1) determining and dividing road sections, and determining each analyzable road section; 2) preprocessing data to obtain traffic flow data and traffic flow geographic data; (3) standard traffic flow conversion: converting the input data, and uniformly converting large and small traffic flows passing through a road section into standard traffic flows; 4) density data is obtained through the flow and speed data, and a flow-density data set is obtained; 5) estimating a flow-density model, and fitting the data of the target road section by using Gaussian process regression to obtain a model; 6) obtaining the maximum traffic capacity, and solving the maximum traffic flow by using a particle swarm algorithm; 7) acquiring a saturation rate; and (8) matching a corresponding service level grade according to the saturation rate obtained in the step (7). Through an artificial intelligence method, the traffic condition information is obtained in time, a basis is provided for road management, and timely and effective measures are taken.

Description

technical field [0001] The invention relates to the field of road traffic service level evaluation, in particular to a road service level evaluation method based on saturation rate. Background technique [0002] In recent years, with the rapid development of my country's national economy, the traffic demand is increasing day by day, which will inevitably promote the rapid development of highway construction. As the proportion of highway construction mileage in the total highway construction mileage is increasing, how to People pay more and more attention to the scientific management of built expressways, which requires us to make an objective and scientific evaluation of the running quality of expressways that have been in operation, so as to provide a reliable basis for management decisions. [0003] Service level is the level of service felt by road users in terms of safety, comfort, efficiency, economy, etc. It is also an objective evaluation of road traffic conditions and...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the existing technologies, and aim at the fact that the existing expressway management schemes cannot effectively deal with the actual traffic conditions that occur in real time, this technology uses the traffic flow information provided by sensors such as radars and cameras, and designs a road service level based on the saturation rate. Evaluate the program to provide timely and effective basis for management

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