Traffic Flow Characteristics And Simulation Model Design In The Interweaving Area Of Urban Expressways

With the continuous increase of motor vehicles,urban road traffic loads are becoming increasingly serious.Although the construction of urban expressway has played a certain role in alleviating traffic congestion,due to the complexity of traffic flow in the expressway interweaving area,it is still easy to form blockage.Therefore,the study of traffic operation characteristics and laws of urban expressway interweaving area,is particularly necessary.This article is based on the urban expressway interweaving area as the research object.The application of drones has collected actual traffic flow operation data.On the basis of the analysis of traffic flow characteristics of urban expressway interweaving area,the simulation model of urban expressway interweaving area has been established.In the influencing factors,the traffic operation status of the urban expressway interweaving area is evaluated,and then the urban expressway management and improvement of design countermeasures are proposed.The main work of this article includes:Firstly,the traffic flow data of the Expressway in the south of Yangzhou City was collected using the UAV air auction technology.The application of image recognition technology processed the data.It counts the speed,flow,and time of the traffic flow of the urban expressway interweaving area in the actual scenario,In the way to change the probability of the road,the system analyzes the traffic flow of traffic flow.Secondly,on the basis of the system comparative analysis of the existing traffic flow simulation model method,according to the characteristics of the traffic flow data of the urban expressway interweaving area in the actual scenario of this article,a component based motivation model and the SUMO simulation urban expressway interweaving area The traffic simulation model is calibrated on the follow up parameters,road scenes,simulation durations,etc.in the simulation model,and compare it with actual data to meet the simulation requirements.Furthermore,the simulation model built,based on the average speed,front distance,traffic conflict,etc.,as the evaluation indicator,and the traffic flow characteristics of urban expressway interweaving area in different scenarios affects the evaluation.The effects of the length,different traffic flows and different driving behaviors on the operating characteristics of traffic flow are compared and analyzed.The simulation results show that when the traffic in the urban expressway interweaving area is certain,as the length of the urban expressway interweaving area increases,the average speed of the vehicle,the front distance of the vehicle will increase;when the length of the urban expressway interweaving area reaches 400m,this impact will be No longer significantly.When the length of the urban expressway interweaving area is certain,as the number of vehicles in the urban expressway interweaving area increases,the speed of the vehicle and the front of the vehicle will decrease accordingly,but the number of conflicts and carbon dioxide emissions will increase;when the traffic increases to a certain degree,the speed of the vehicle speed and the front of the car decreases.The trend slows down,but the number of traffic conflicts has increased.When analyzing the impact of driving behavior on the traffic status of the vehicle driving area,the two states of low flow and high flow are simulated simulation.The results show that in the general low traffic environment,the effect of related factors on the overall operation status of the urban expressway interweaving area is relatively compared to relatively compared Small,the higher the proportion of vehicles and ramps in high traffic environments,the greater the impact on the operating state of the urban expressway interweaving area.Finally,according to the assessment and influence of the operation simulation and influence of urban expressway interweaving area,for the main factors that affect the traffic operation of the urban expressway interweaving area,from the aspects of driving behavior management,traffic control,and design improvement design of the urban expressway interweaving area,the management of urban expressway operations is proposed With the improvement of countermeasures,the improvement design proposed by simulation comparison can better improve the traffic efficiency of the urban expressway interweaving area,and can provide decision making reference for the management and improvement design of the fast road.