Computation method of expressway section travel speed based on ETC (Electronic Toll Collection) data

Abstract

The invention discloses a computation method of an expressway section travel speed based on ETC (Electronic Toll Collection) data. The method comprises the steps of original ETC transaction data preprocessing and section travel speed computation based on the ETC transaction data. The computation method of the speed in different sample size levels is provided by two situations according to the ETC data size of a section within a computation time period. The method performs preprocessing such as extraction, deletion and screening on original ETC data, as well as computation time period division by depending on a database analysis and data excavation technique, so that the data quality is improved; a section travel speed computation module based on multiple OD (origin-destination) pairs is established; in order to ensure sufficient data size, complex weighting is performed on a ratio of an OD speed to the OD pair mileage occupied by the section by utilizing travel speeds of multiple OD pair ETC transaction data computation sections including the computation section; and the travel speed of the section is obtained. The method solves the problems that expressway speed monitoring data is poor in quality and low in accuracy.

Description

technical field [0001] The invention relates to a method for calculating the travel speed of a highway section according to ETC (Electronic Toll Collection) transaction data, and belongs to the field of ETC data mining and application. Background technique [0002] With the substantial increase of the number of motor vehicles and the continuous increase of the travel distance of residents, the traffic pressure on the expressway is gradually increasing. Especially after the implementation of the free car policy on holidays, how to realize the monitoring of the travel speed and flow of the expressway, How to realize the accurate and real-time release of expressway operation status has become an important issue affecting the improvement of expressway operation management and information service level. [0003] Due to the serious shortage of expressway monitoring infrastructure in my country, the expressway speed monitoring method is relatively single and the coverage is limited...

AI Technical Summary

Problems solved by technology

This system is made up of signal machine fixedly arranged on the road, wireless license plate and computer management system, because the signal machine in this invention is fixedly arranged on the expressway, therefore can only monitor the realization speed measurement that is provided with the signal machine position, cannot Realize seamless vehicle speed monitoring throughout the process

Moreover, the above methods all focus on monitoring the traffic flow parameters of a single vehicle, and cannot obtain the operating status of the overall traffic flow of a specific section of the expressway.

The Chinese invention patent with the applicati

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