Measuring and calculating method for traffic flow of section of expressway

Abstract

The invention relates to the technical field of traffic information, particularly to a measuring and calculating method for the traffic flow of the section of an expressway without repeated establishment of monitoring equipment or repeated manual investigation. The measuring and calculating method comprises the following steps: 1) obtaining the distance between a section to be detected and an upstream toll station, and the distance between the upstream toll station and a downstream exit toll station; detecting the travel time of a vehicle between the upstream toll station and the downstream toll station, and obtaining the average travel speed of the vehicle between the upstream toll station and the downstream toll station; obtaining the time required for the vehicle to travel from the upstream toll station to the section to be detected according to the obtained distance between the section to be detected and the upstream toll station and the average travel speed of the vehicle; obtaining the time at which the vehicle passes the upstream entrance toll station, and obtaining the time at which the vehicle arrives at the section to be detected according to the obtained time required for the vehicle to travel from the upstream toll station to the section to be detected; and counting the number of vehicles passing the section to be detected in a unit time period according to the obtained time at which the vehicle arrives at the section to be detected, so as to obtain the traffic flow the section of the expressway.

Description

technical field [0001] The invention relates to the technical field of traffic information, in particular to a method for measuring and calculating traffic flow at a section of an expressway. Background technique [0002] With the continuous deepening of reform and opening up and the acceleration of the construction of a well-off society, my country's economy is in a period of steady and rapid development. The improvement of people's living standards and the rapid growth of car ownership, the continuous acceleration of urbanization and motorization, the adjustment of economic structure and the transformation of production methods will definitely put forward newer and higher requirements for the development of expressway transportation. Since the 1990s, through the joint efforts of the whole society, my country's transportation has entered the best development period in history. Especially since 1998, the central government has made a major decision to expand domestic demand...

AI Technical Summary

Problems solved by technology

The collection, collation and application of traffic data are far behind the level of developed countries, and a unified data management model has not been formed to realize the sharing of data resources. As a result, a large amount of valuable basic data has not been fully utilized, resulting in unnecessary repetition and repetition. investigation

At the same time, due to the lack of data resources, traffic management is also insufficient.

This is especially true for the analysis of the traffic flow of the road network. There is no systematic and comprehensive traffic flow data of the expressway network when conducting research on expressway planning and construction schemes. Many expressway construction projects do engineering feasibility studies. It takes a lot of manpower and material resources to conduct local traffic flow surveys, and the data are not accurate and comprehensive due to the limitations of conditions.

Inaccurate traffic flow data can also easily lead to errors in planning or construction projects

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