Method for predicating degree of reliability of traffic circulation of arterial highway under snow and ice environments

A prediction method and reliability technology, which can be used in road vehicle traffic control systems, traffic control systems, and special data processing applications. question

Inactive Publication Date: 2014-07-23
张兴
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Problems solved by technology

However, this identification standard is not necessarily suitable for the reliability of the arterial road network in China's ice and snow environment.
[0006] To sum up, the research on the traffic operation reliability of the arterial road network under the ice and snow environment is very necessary for the traffic management of the arterial road network. The current research results focus on the research on the reliability of the urban road traffic operation, while for the ice and snow environment, Insufficient research on traffic operation reliability of arterial road network, and lack of corresponding criteria

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  • Method for predicating degree of reliability of traffic circulation of arterial highway under snow and ice environments
  • Method for predicating degree of reliability of traffic circulation of arterial highway under snow and ice environments
  • Method for predicating degree of reliability of traffic circulation of arterial highway under snow and ice environments

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specific Embodiment approach 1

[0046]Specific implementation mode one: step one, carry out statistics, grouping and fitting test to the surveyed speed data, according to figure 1 The speed distribution curve shows that the average speed of the road section changes with the different time periods of the day. The speed in the time period from 6:00 am to 18:00 pm exceeds 80km / h, and from 18:00 to 6:00 pm The speed during the time period is lower than 80km / h; figure 2 and figure 1 The velocity profile of is similar; image 3 and Figure 4 It reflects the distribution characteristics of the speed on the snow-free road surface. The histogram and curve diagram of the speed distribution in the figure show that the speed distribution is a normal distribution; Figure 5 It reflects the speed distribution with a statistical interval of 5 minutes. The distribution curve in the figure shows that the speed distribution conforms to the normal distribution within the statistical interval of 5 minutes; Figure 6 The me...

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Abstract

The invention discloses a method for predicating degree of reliability of traffic circulation of the arterial highway under snow and ice environments and relates to the field of transportation management. The method comprises the following steps of 1, analyzing journey time of automobiles on a certain section in a certain period of time; 2, taking degree of reliability of the journey time as an index for evaluating stability of the journey time; 3, computing a threshold value of the degree of reliability under snow and ice disasters. By means of the method, traffic circulation conditions of the arterial highway under the snow and ice environments can be judged according to degree of reliability, whether snow and ice disasters happen can be judged, and theoretical support is provided for transportation management.

Description

Technical field: [0001] The invention belongs to the field of transportation management, and in particular relates to a method for predicting the reliability of traffic operation under the ice and snow environment of an arterial road. Background technique: [0002] Ice and snow disaster is a natural phenomenon that a large amount of snowfall causes large-scale snow accumulation accompanied by freezing. Ice and snow disaster is a kind of meteorological disaster that often occurs in northern my country, which has a great impact on the operation efficiency and safety of trunk roads. "China Disaster Research Series" is an important achievement of my country's comprehensive research on disaster science. This series of books not only puts forward new concepts and principles for disaster prevention and management in disaster management, disaster economics, and disaster security from the perspective of humanistic management, but also introduces new concepts and principles for disast...

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Application Information

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IPC IPC(8): G08G1/00G06F19/00
Inventor 张兴臧晓冬李旭辉齐兆辉范业雷刘磊
Owner 张兴
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