Method for acquiring dynamic traffic volume of whole road sections of road network

Abstract

The invention provides a method for acquiring the dynamic traffic volume of the whole road sections of a road network. The method describes a dynamic traffic network based on a cell transmission model, and uses a path time-varying traffic volume as a combined link to establish, based on the variational inequality theory, a discrete dynamic O-D inversion model and a dynamic traffic assignment combination model that satisfies the dynamically-predicted user optimal constraint, so as to calculate the time-varying dynamic full O-D demand and the whole road network dynamic traffic volume according to the real-time traffic volume of some road sections of the road network. The method balances the dynamic total deviation of the dynamic O-D inversion model and the path travel time of the dynamic traffic assignment model, realizes the comprehensive optimization of the two models, eliminates the solution of an intermediate variable, reduces a calculation error, and improves calculation efficiencyand precision.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and in particular relates to a method for acquiring dynamic traffic volume of the whole section of a road network. Background technique [0002] Advanced traffic management systems and advanced traveler information systems are important research contents of intelligent transportation systems, which can improve the road system, reduce network stay time, and optimize the temporal and spatial distribution of traffic flow through real-time traffic management control and traffic flow guidance, so as to achieve mitigation. City traffic jam purpose. The dynamic traffic network model plays an important role in achieving the above goals, and dynamic O-D (Origin-Destination, traffic travel volume between the origin and destination) back-calculation and dynamic traffic allocation are the core contents of the dynamic traffic network model. [0003] Dynamic O-D inversion is based on the ob...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of the above-mentioned existing acquisition method of dynamic traffic volume of the whole road network section which is complex, difficult to solve and low in accuracy, or at least partly solve the above problems, an embodiment of the present invention provides a method for acquiring dynamic traffic volume of the whole road network section

Images