Method and system for monitoring traffic operation status of urban road network

Abstract

The invention relates to a method and system for monitoring traffic operation status of urban road network. The monitoring method includes: obtaining road segment attributes, road segment sets, and the average traffic of taxi historical traffic in different time periods; establishing a road network structure according to the road segment attributes and road segment sets; using a random walk algorithm to simulate the road network traffic trajectory of the road network structure, Generate a set of vehicle traffic trajectories; construct an embedded network model according to the spatial structure information, road segment attributes, and the average traffic of taxi historical traffic in different time periods; encode the road segments according to the embedded network model, determine the final effective code of the road segment, and encode Carry out clustering processing on the road sections to determine the clustering results; sort the importance of the roads according to the clustering results, and select the monitored road sections; monitor the traffic operation status of the urban road network according to the monitored road sections. By adopting the monitoring method or system provided by the present invention, the road network traffic conditions 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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