A Numerical Determination Method of Expressway Traffic Index

A traffic index and expressway technology, which is applied in the traffic control system of road vehicles, traffic flow detection, traffic control system, etc., can solve the problems of relevant indicators and clustering algorithm content that cannot be applied, and achieve smooth and high-quality expressways The effect of mobility services

CN106652450BActive Publication Date: 2019-04-30SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-04-30

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Abstract

The present invention discloses an expressway traffic index value determination method. The method comprises the following steps: collecting expressway traffic data and constructing a historical database; constructing an expressway traffic flow base map; dividing the expressway traffic state into different grades through the clustering operation, and performing one-to-one conversion of the traffic state grades and the traffic index grades; dividing the different traffic index values in the same traffic index grade through clustering operation; calculating the divided traffic density critical threshold values of the traffic index values of the same traffic index grade; and dividing the real-time data points into the concrete expressway traffic states and the traffic index grades, and determining the concrete traffic index value according to the traffic density. The expressway traffic index value determination method realizes the calculation of the traffic index concrete values of the expressway and supports the construction of the traffic index system and the practice application on the expressway.
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Description

technical field

[0001] The invention relates to the field of highway operation management, in particular to a method for determining the numerical value of highway traffic index. Background technique

[0002] In recent years, the construction and operation of my country's expressways are in a stage of rapid development, and the traffic volume of expressways is also increasing year by year. Especially during holidays, expressway congestion is prone to occur. Expressway managers are currently facing challenges brought about by the contradiction between traffic supply and demand. How to intuitively and timely understand the traffic operation status on the expressway, and on this basis, scientifically control the entrance and exit of the expressway, has become a solution to the traffic supply and demand problem, and for The key to providing better service to highway users and easing highway congestion.

[0003] In recent years, the concept of road traffic index has become a res...

Examples

Embodiment Construction

[0017] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

[0018] Such as figure 1 As shown, a method for determining a highway traffic index value disclosed in an embodiment of the present invention mainly includes the following steps:

[0019] S1: Collect data and build a historical database. Since there are a large number of floating car data on urban roads, the urban road traffic index can be established based on this database. However, expressways can only rely on fixed detection equipment to collect speed data. On the other hand, fixed detection e...