A Combined Optimal Layout Method of Multiple Types of Traffic Detectors on Expressway

Abstract

The invention provides a combination optimized layout method for multiple types of highway traffic detectors. The method comprises the following steps: acquiring basic information of a highway; simulating a traffic environment by using a traffic simulation tool according to the acquired highway basic information, partitioning road segments into equally-spaced small segments, setting middle points of the small segments into detector layout points, making existing detectors correspond to corresponding small segments, and performing simulated analysis to obtain traffic parameter information acquired by all the road segment detectors; and lastly, establishing an average absolute relative error target function of travel time, and resolving a final traffic detector layout scheme. The detectors are combined reasonably according to working environments, data detection types and detection accuracy of different detectors in order to increase the overall detection accuracy of data and detection types. Through combination of different detectors, the advantages of different detectors on the aspects of data detection types, detection accuracy and the like are complemented, and the road traffic information detection accuracy is increased on the basis of full utilization of already-arranged detectors.

Description

technical field [0001] The invention belongs to the technical field of road facilities and equipment layout in traffic engineering, and in particular relates to a measurement method for determining the combined optimal layout of multi-type traffic detectors on expressways. Background technique [0002] At present, the following phenomena generally exist in the dynamic traffic data collection system of most expressways in my country: the number of dynamic traffic data collection equipment is insufficient, and the layout location is unreasonable; the real-time performance of dynamic traffic data collection is poor and cannot be uploaded in time; the accuracy of traffic data is poor , the detection accuracy is not high; the traffic data acquisition equipment is severely damaged, and some data has become invalid. In addition, there are also problems such as the road sections where traffic detectors have been deployed, the types of detectors newly densely deployed, and the unreaso...

AI Technical Summary

Problems solved by technology

Obviously, a single detection technology is difficult to meet the above needs

When a single detection technology can no longer meet the requirements of dynamic traffic data collection under various traffic conditions, how to scientifically and effectively apply dynamic traffic data detection methods, make use of the advantages of different traffic detection technologies to make up for the shortcomings of a single detection technology, and collect real-time and accurate data The problem of traffic data arises as the times require

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