Method and system for acquiring real-time traffic status information

Abstract

The invention relates to the field of intelligent transportation, and discloses a method and system for acquiring real-time traffic status information. The method includes the following steps that all road sections in a road network are traversed, so that effective links with the starting nodes and the terminal nodes being each provided with a checkpoint device are generated; the vehicle passing data of all the checkpoint devices in the current road condition period or the previous historical period within the license plate backtracking period are read in; the effective links are read one by one, and vehicle passing records corresponding to the starting nodes and the terminal nodes of the links are screened out in the vehicle passing data; the vehicle passing data matched with license plates are searched for, accordingly, the section vehicle speed and the reliability of single samples are calculated, and abnormal samples are filtered; the samples of all the effective links are distributed to all the road sections to generate the real-time traffic status information. According to the method and system, foundation road network data are processed to generate the effective links, the license recognition vehicle passing data are analyzed on this basis, the concept of the sample reliability is introduced, and the accuracy rate of the real-time traffic status information and the information coverage of the complex road network can be improved.

Description

technical field

[0001] The invention relates to the field of intelligent transportation, in particular to a method and system for acquiring real-time road condition information in traffic guidance. Background technique

[0002] With the improvement of related technologies, the license plate capture rate and recognition rate have been significantly improved, and the traffic information collection technology based on vehicle license plate recognition data has emerged as the times require. Compared with other traffic information collection technologies, the traffic information collection technology based on license plate recognition data has the advantages of strong work continuity, high data accuracy, and large detection sample size. The dynamic traffic data acquisition system based on the automatic identification technology of automobile license plate can obtain the parameters such as the travel time and travel speed of the vehicle by discriminating and analyzing the license ...

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