Urban road network traffic operation condition monitoring method and system

Abstract

The invention relates to an urban road network traffic operation condition monitoring method and system. The monitoring method comprises the steps: acquiring road section attributes, a road section set and an average flow of taxi historical flows in different time periods; establishing a road network structure according to the road section attributes and the road section set; simulating a road network passage track of the road network structure by using a random walk algorithm to generate a vehicle passage track set; constructing an embedded network model according to spatial structure information, the road section attribute and the average flow of the taxi historical flows in different time periods; encoding the road section according to the embedded network model, determining a final effective code of the road section, clustering the encoded road section, and determining a clustering result; sorting the importance degrees of the roads according to a clustering result, and selecting amonitored road section; and monitoring the traffic operation condition of the urban road network according to the monitored road section. By adopting the monitoring method or system provided by the invention, the road network traffic condition of the whole city can be monitored in real time.

Description

technical field [0001] The invention relates to the field of urban traffic monitoring, in particular to a method and system for monitoring traffic operation status of urban road network. Background technique [0002] With the rise of urban computing and intelligent transportation, research such as urban traffic flow prediction and traffic jam identification can effectively improve urban traffic conditions. However, current related research still has the following limitations: [0003] 1. The traffic conditions of the road can be accurately monitored by laying relevant sensors on the road section. However, due to installation and maintenance costs, only limited roads in the road network can be selected as monitoring points. Most of the current monitoring points are selected based on subjective experience and cannot be effective. Monitor the traffic conditions of the entire road network; [0004] 2. For the related research using GPS trajectory data, since GPS data is mostly ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method and system for monitoring the traffic operation status of the urban road network, so as to solve the problem that the existing traffic status monitoring method cannot monitor the traffic operation status of the urban network in real time, and the monitoring results have deviations

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