基于元胞自动机城市道路缩减区驾驶行为分析

Analysis of Driving Behaviors in the Urban Lane-decreasing Zone Based on Cellular Automaton

针对城市道路缩减区造成的拥堵问题,通过对长沙城市道路缩减区进行数据采集与分析,得到缩减区的运行特征参数,如车头间距、车速、最大车速、高峰小时流量以及缩减区内车辆换道比例等驾驶行为特征值,并结合调查数据对元胞自动机模型进行参数标定.采用标定后的元胞自动机对两类缩减区进行仿真实验,得到不同密度情况下车道缩减区内的车辆换道比例和换道次数,确定出对道路交通影响最大的密度区间.

In order to solve the traffic jam caused by the lane‐decreasing zone and provide the effective organization and management ,the data of Changsha was collected and analyzed to obtain the operation pa‐rameters and driving behavior characteristics value ,such as the front pitch ,speed ,maximum speed ,rush hour traffic and lane changing proportion etc .Then the model parameter calibration of cellular automata was set and put into the simulation experiment to obtain the ratio and times of lane‐changing under the dif‐ferent density of the decreasing zone and thus the maximum density range with greatest impact on road traffic was determined .