Floating car based urban road AADT (annual average daily traffic) estimation method

A floating car, city technology, applied in road vehicle traffic control systems, traffic flow detection, instruments, etc., can solve problems such as low efficiency and poor accuracy

Active Publication Date: 2014-03-12
ANHUI KELI INFORMATION IND
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Problems solved by technology

[0004] The purpose of the present invention is to solve the defects of poor precision and low efficiency of the traditional AA...

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  • Floating car based urban road AADT (annual average daily traffic) estimation method
  • Floating car based urban road AADT (annual average daily traffic) estimation method
  • Floating car based urban road AADT (annual average daily traffic) estimation method

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Embodiment Construction

[0039] In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

[0040] The floating car technology can store the data collected for one year in the database, and use the speed information of the periodic road section to obtain the flow information of the periodic road section. The real-time average speed of the road can be obtained by taking the spatial average of all the floating point speeds of the road section, and the arithmetic average of the real-time speed of the road section within a certain period can be used to obtain the periodic average speed of the road, and then according to the multi-time division, the weighted calculation can obtain the daily traffic of the road Flow, and then arithmetically average the annual daily traffic flow to obtain the annual average daily traffic flow of the...

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Abstract

The invention relates to a floating car based urban road AADT (annual average daily traffic) estimation method. The method includes the following steps: utilizing floating car GPS (global positioning system) data for calculating section individual car sample velocity; extracting section average travel velocity; calculating hour traffic; estimating daily average traffic; estimating AADT. Compared with the prior art, the method has the advantage that the problems of poor accuracy and low efficiency of a conventional AADT estimation method are solved. Section average velocity is acquired by the aid of the floating car technology, and intelligent accurate estimation of the road AADT is realized through a series of model calculation.

Description

technical field [0001] The invention relates to the technical field of road traffic planning, in particular to an urban road AADT estimation method based on floating vehicles. Background technique [0002] AADT (annual average daily traffic) is a very important parameter for traffic models and management decisions, and plays a key role in research fields such as traffic planning, road design, traffic safety, traffic demand analysis, and traffic control. . Because the traditional AADT method adopts the manual survey method, select a representative month of the year to conduct a manual 24-hour survey record every day of a week, and multiply the recorded results by the weekly unevenness coefficient and the monthly unevenness coefficient to obtain the AADT. This method is time-consuming and labor-intensive, and the accuracy is low. Since the values ​​of the weekly unevenness coefficient and the monthly unevenness coefficient are fixed, it is different for roads of different gra...

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Application Information

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IPC IPC(8): G08G1/00G08G1/01
Inventor 邹娇陶刚高万宝刘俊
Owner ANHUI KELI INFORMATION IND
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