Realizes the longitudinal relationship between models by using object - oriented programming language ; 2 ) sets forth the function and software design in detail , and analyzes entities of the system . realizes the randomness of traffic flow and constructs vehicle arriving model , vehicle movement model on road segments and vehicle movement model on intersections , so completes the kernel part of traffic simulation ; 3 ) uses 3d modeling software - multigen creator and real - time simulation software - vega to build up the 3d virtual environment of microscopic traffic simulation , and drives dynamic entities such as driver - vehicle units and traffic lights in static scenes ; 4 ) studies the characteristic of checkerboard system of street layout , analyzes and decomposes the system to deduce a certain simplification method . and researches the application of urban traffic route choice 论文主要工作如下： 1 )利用面向对象技术分析交通仿真系统模型之间的横向关系和交互作用，研究静态实体的状态变化和动态实体的运动规律；利用面向对象的程序设计语言实现系统中模型的纵向关系； 2 )详细阐述交通微观仿真系统的功能设计、软件设计，分析仿真系统中的实体；实现车流的随机性，建立车辆的到达、车辆在路段上的行驶过程、车辆通过交叉口的行驶过程等模型，完成交通仿真的核心内容； 3 )利用三维建模软件multigencreator和实时仿真软件vega建立交通状态微观仿真的三维虚拟环境，在静态视景中驱动驾驶员-车辆单元、信号灯等动态实体； 4 )研究棋盘式道路格局的特点，从理论上分析并分解系统，得到一定的简化依据，进一步研究城市交通路线选择的应用。
