| Urban road lane drop area in transition section of road and bridge, the subway construction area, etc. In recent years, the rise of urban rail transit, its construction resulting in the reduction in the driveway area particularly common. In the drop area, due to the partial interruption of lanes, the lane number of mutations, local road traffic capacity, has become a frequent area of urban traffic congestion. How thorough analytical lane drop area driving behavior characteristics, accurately assess lane drop area of vehicle driving, and the impact of road traffic, to guide the driveway drop area design and traffic organization and management, relieve urban road network traffic bottlenecks is of great significance.Cellular automata is a discrete mathematical model of time, space and variables, attracted widespread attention in the traffic flow model and simulation applied research.This paper summarizes the status characteristics of cellular automata traffic flow model on the basis of the combination of lane drop data acquisition of driving behavior and traffic characteristics, build a drive to drop OuDeYuan cellular automaton model, making use of the MATLAB simulation program, take advantage of new simulation program of three kinds of driveway drop area to carry on the simulation, analysis, and got three kinds of driveway drop area of the running characteristics of traffic flow and the characteristics of driving behavior. The concrete content includes:Analysis at home and abroad about the research status of vehicle driving behavior and traffic simulation, summarizes the existing traffic simulation of car following and lane changing model and the characteristics of cellular automata model.Several typical lane drop with changsha district as the object investigated, to get the operation characteristic parameters of the different lanes drop area, including:front spacing, the speed, maximum speed, the peak hour traffic and vehicle lane changing proportion of drop zone driving behavior characteristic value.Build a drive to drop area cellular automata model, lane from more than one dimension cellular automata traffic flow model, this paper introduced the influence of lane drop cellular automata model, combined with the survey data on the cellular automata model parameter calibration.Using MATLAB lanes to drop the traffic simulation program is developed, by using the simulation class lane drop area simulation experiment, results for the driveway of drop traffic characteristics respectively, including:flow rate, density, velocity, etc.Under different traffic conditions based on simulation results, the collection (density) vehicle lane changing lanes to drop zone, following behavior, get the lane changing rate characteristics, and then get the driveway drop area on the influence of vehicle and road traffic density range. |
