Method for laying urban road network traffic flow detectors

Abstract

The invention discloses a method for laying urban road network traffic flow detectors. The method includes the following steps: selecting a laying mode for the detectors; carrying out clustering analysis; presetting the positions and the number of the detectors; selecting a forecasting method; forecasting traffic flows of intersections without detectors with the selected forecasting method; and according to forecast results, combined with a clustering pedigree chart, finally confirming the positions and the number of the detectors. Correlation among the traffic flows and then a statistic method are used for determining the laying positions of the urban road network traffic flow detectors, and the method for laying the urban road network traffic flow detectors has the advantage of being wide in coverage. The traffic flow detectors are just laid on a small number of intersections in an urban road network, so that civil engineering cost is low, workload is small, and economical efficiency is good. Only limit detector laying on the intersections and limit infrastructure investments need to be carried out to obtain traffic flow information of the whole urban road network, so that macro-management of the whole urban road network is achieved.

Description

technical field [0001] The invention relates to a detection method of urban road network traffic flow, in particular to a layout method of urban road network traffic flow detectors. Background technique [0002] With the rapid increase of urban traffic flow, the difficulty of urban traffic management is gradually increasing. At present, many countries in the world, including developed countries, generally adopt intelligent traffic control systems, such as traffic surface control systems and intelligent transportation systems. With the advancement of science and technology and the development of road transportation, in some large and medium-sized cities in my country (even some developed countries in the world), the density of road networks is increasing, and the number of nodes (here, intersections) in the road network is increasing. More and more, for such a dense road network, in order to achieve its macro management, it is necessary to obtain the traffic flow information ...

AI Technical Summary

Problems solved by technology

If we simply rely on burying detectors at main intersections to obtain traffic flow information, it will cost a lot of infrastructure investment, and at the same time the amount of traffic flow information obtained cannot include the traffic flow information of all intersections. The macro management requirements of the control system for the overall urban road network

[0003] The traditional detector deployment method is just that the traffic management department deploys detectors at major urban intersections according to needs. This layout method does not take into account the correlation between traffic flows between the intersections, and the layout has a certain degree of blindness.

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