Modeling And Simulation Of Non-motor Vehicle Traffic Flow For Internal Disturbance Behavior

In recent years,with the increase of non-motor vehicle travel sharing rate and lane loading,parallelism and direction change within non-motor vehicles have been common,which affecting the operation order of urban roads and causing great hidden dangers to traffic safety.Relying on the Natural Science Foundation(52172338)and the Youth Program of Natural Science Foundation(51908060),this paper analyzes the cycling behavior under non-motor vehicle internal disturbance,and by constructing the perception-decision-making process of non-motor vehicle cyclists,a micro model of non-motor vehicle traffic flow considering the cyclist’s attributes is established,and then the operation safety of non-motor vehicles under the influence of internal disturbance behavior is simulated and analyzed.The main research contents of this paper are as follows:(1)Based on the measured data,the psychological and cycling characteristics of cyclists under the influence of interference behavior are calibrated.Combined with the improved MDSI scale,cyclists are divided into three categories: aggressive,balanced and cautious,psychological characteristics such as cyclists’ attributes,hazard perception,and psychological safety spatial distance are obtained through the questionnaire results,although Data from sky software is used to process the non-motor vehicle operation video of the road section shot to obtain motion characteristic data such as speed and trajectory distribution.(2)Considering the psychological field theory,the microscopic traffic model of non-motor vehicles is improved.Define a cyclist’s behavior as a combination of the cyclist’s attributes and the ambient space.Considering the role of non-motor cyclists in the dynamic cycling process of other traffic individuals,integrating the cyclist attributes,speed difference,distance,angle with other indicators between other individuals,the calculation formula of psychological field force is proposed,and the psychological field force is combined with driving force and boundary force to construct a non-motor vehicle social force model considering internal interference,which characterizing the movement state of cyclists more appropriately.(3)The perceptual-decision-making behavior selection mechanism of non-motor cyclists is proposed.Previously,the positive correlation of the psychological perception and cycling behavior of the cyclists through the methods of mathematical statistics.Therefore,based on the resultant force and perception decision-making process of cyclists in the non-motor vehicle micro-traffic model,a selection mechanism of cyclists’ perception-decision-making behavior under the influence of interference behavior is constructed,and different selection behaviors are calibrated according to the model parameters of cyclists.(4)A micro-traffic simulation model for non-motor vehicles is built in the Python environment.Based on the force and behavior selection mechanism of cyclists,the power parameters of non-motor vehicles are calibrated,the non-motor vehicle control module is constructed,and the simulation scene control module is constructed based on road conditions to complete the simulation of the actual operation status of non-motor vehicles,then the effectiveness of the model is verified by using the number of interference behaviors,basic diagrams and vehicle speed distribution,and the operation safety of non-motor vehicles is analyzed by the vehicle operating conditions under different road conditions of the model,the corresponding management countermeasures are proposed finally.