Urban intersection traffic state discrimination method based on RFID data

Abstract

The invention discloses an urban intersection traffic state discrimination method based on radio frequency RFID data. The method includes: determining an intersection traffic state description parameter, performing RFID data screening and cleaning and base station comparison preprocessing, and determining an operation track between an upstream base station and a downstream base station of a vehicle intersection through license plate comparison; then obtaining the intersection delay times and saturation estimation values by employing compared vehicle recording data; and finally classifying the delay times and the saturations in different periods of the intersection through hierarchical clustering, and determining the operation state of the intersection with the combination of different categories of the intersection delay times and saturations. According to the method, the urban intersection traffic state can be discriminated, certain basis is provided for traffic guidance, traffic control and guidance information can be published, and effective coordination of traffic control and guidance can be realized.

Description

technical field [0001] The invention belongs to the technical field of traffic intelligent management and control, in particular to a method for judging the traffic state of an urban intersection based on RFID data. Background technique [0002] Urban intersections are the bottleneck of urban roads, and their traffic efficiency often affects the operation of road networks. Intersection traffic state discrimination is the key to identify the intersection traffic state. Real-time and reliable identification of traffic status at intersections is beneficial to the management and control of traffic signals at intersections, and signal cycle optimization; effectively identifying traffic status at intersections and providing reference for traffic guidance is an indispensable organic component of traffic control systems and traffic guidance systems. component. [0003] At present, the methods for urban traffic state discrimination mainly include fuzzy synthesis theory, FCM-rough s...

AI Technical Summary

Problems solved by technology

RFID data is used to study the passage time of road sections, vehicle emissions, etc., but RFID data is rarely used in the identification of traffic conditions at intersections, so researchers are required to conduct research and experiments.

Images