Research On Traffic Flow Characteristics In Road Interweaving Area Under Vehicle Network Environment

The development of connected vehicle is gradually affecting people’s lives,and promote the development of intelligent transportation.With the popularity of Chinese cars,road traffic congestion problem become more prominent.As the bottleneck section of road traffic,the interweaving area is seriously intertwined,and the congestion queue length is 1-2km upstream.In this paper,we study the interweaving problem caused by the intertwined area,the conflict characteristics and the queuing characteristics of the traffic lane in the intertwined area from the perspective of microcosmic parameters.First of all,collected a large number of articles at home and abroad,including the development of connected vehicle,the development of traffic flow theory,vehicle lane model,queuing theory related research,and the Space-time displacement theory,fluid mechanics,guided model,vehicle motion trajectory control theory,which are related to the intertwined areas.Then determined the research theory and research methods of the road interweaving area in the vehicle interconnection area.On the basis of the available conditions,observing the intertwined area of real car intertwined operation and establishing the actual vehicle test simulated vehicles intertwining,record the relevant time,distance data and analysis of the characteristics of the intertwined operation in the intertwined area.Secondly,based on mastering the relevant data,the paper analyzes the distance relationship between the lane vehicles and other related vehicles in the process of vehicle interweaving,and analyzes Lane change model in the road intertwined area by vehicle kinematics theory.Then compared and analyzed the model wheater it is Accuracy and reliability,by collecting the distance and time data from the actual vehicle test to model calculus and get the distance,with the distance parameter data obtained from the actual vehicle test.Thirdly,based on the causes of the intertwined conflict and the characteristics of the conflict,the paper puts forward the queuing theory of the road interweaving zone,restores and analyzes the interweaving process of the road interweaving zone under the traditional environment by the data,to determine the vehicle’s time after interweaving the fixed length.In addition,VISSIM simulation and VISSIM secondary development simulation technology are used,to analyze the time taken by the fixed length of the vehicle through section under the traditional simulation environment and the secondary development.And records the number of vehicles passing in 200 seconds,analyzes the distance of Adjacent two cars and the advantages of the road interweaving area under connected vehicle.Finally,the paper analyzes the distance data and time data obtained from the model,compares the traffic capacity of the road interweaving area between the traditional environment and the connected vehicle.Then determines the improvement of the traffic capacity of the road interweaving area.For the study of road interweaving area in connected vehicle provides some theoretical reference.