Influence Of Traffic Flow Isomerism On Traffic Flow Operation Efficiency And Experimental Analysis

In the traffic flow,the difference between the inherent attributes of the vehicle and the driver's driving habits are important reasons for the reduced efficiency of traffic flow,and even the saddle effect and traffic shock wave.In order to solve this phenomenon,the researchers have proposed a large number of traffic flow models and driving behavior models,which use top-down modeling methods,make more assumptions and ignore individual differences,so that The theory deviates from reality and cannot realistically simulate the operational state of traffic flow.This thesis constructs a heterogeneous vehicle unit behavior model using a bottom-up agent-based modeling method.In this thesis,the traffic flow isomerism factor tree is first established,and the decision tree splitting method is used to reduce the dimension of the heterogeneous factor tree.On this basis,the complete definition of traffic flow isomerism is given.In order to construct a complete traffic flow model,this paper first establishes the driver self-learning model and the emotional strength model,and based on this,establishes five driver behavior models.Finally,this paper gives the definition of agent and the rules of interaction between agents.Based on this,the experiment is carried out.By changing the number and size of parameters,the influence of traffic flow heterogeneity on traffic efficiency is observed..In this thesis,four sets of experiments are designed,namely: the experiment of the influence of traffic flow isomerism on the traffic flow state,the influence of traffic density on the traffic flow state,the self-learning system verification experiment and the driver's emotional intensity impact experiment.The experimental results show that when the traffic flow isomerism is from 0.26 to 0.33 to 0.49,the traffic flow efficiency is nonlinearly reduced.When the traffic flow isomerism is 0.26 and the traffic volume is 100,the traffic congestion always appears in pairs.When 30% of the vehicles in the traffic flow are heterogeneous,the traffic flow cannot be restored to its original state when congestion occurs.Therefore,the combination of multiple experiments proves that the change of traffic flow heterogeneity will affect the traffic efficiency of traffic flow from various aspects.