A Traffic Flow Cellular Automaton-based Research On Weaving Section Capacity

With the rapid growth and rapid socio-economic development of the motor vehicle,increasing China's major urban road traffic congestion.Traffic organization and management of urban road network gradually from extensive to fine transition,this transformation of the degree of precision for parameters of traffic operation and management put forward higher requirements.Road capacity is the traffic organization and management of the most basic parameters.In the urban road network,roads and intersections are the basic elements of the road network.Capacity of Urban road and intersection have more research results,but relatively few studies of urban roads weaving.Urban road intersections from the past,network traffic nearly saturated condition,the short distance between the interleaved intersections in serious condition,likely to evolve into a serious road weaving.In this case,the interleaving section capacity in accordance with the weaving area to analyze and calculate the results more in line with the actual situation of road traffic operation can provide a more credible argument as capacity and traffic management research program decisions for the organization and management of road traffic support.With the development of computer technology,computer simulation technology is increasingly used in road research and analysis on the traffic flow and capacity intertwined.However,due to the approach is still in its infancy,the simulation results with the actual situation there is often a large gap.Based on the operating characteristics of waving area analysis performed on the basis of previous research,based on the microscopic point of view,weaving operation of the vehicle characteristics were analyzed.It defines the operating characteristics of different types of interleaving area of he vehicle.And found that the interwoven region forced lane change of the vehicle,in front of the car to follow the process,there is deceleration behavior of this phenomenon.Further structural equation model based on the causes of this phenomenon,influencing factors and mechanism are analyzed and studied.After the results of the analysis and empirical research based on structural equation model of the statistical data presented car following strength reduction factor model,and the model was calibrated parameters and goodness of fit test.Use of car-following strength reduction factor model update rules of the vehicle has been improved,resulting in the weaving traffic cellular automaton model improved.The use of weaving traffic cellular automaton tmodel improved simulation study,the use of simulation data for weaving capacity reduction factor model was calibrated to arrive at the capacity of weaving model.At the same time,the use of simulation data capacity of weaving and its effect relationship between the factors studied.We draw the weaving capacity calculation model,the experimental data is compared with the results obtained in this paper model,and achieved better fitting results obtained prove that weaving capacity model has better fitting degree.While identifying weaving capacity and capacity factors affect the relationship between.Research methods used and the results obtained,provides support for decision-making in the future of traffic organization and management of the program,also available to assist future research of weaving traffic flow and traffic capacity.