一种混合交通流微观模型仿真实现

Implementation of Mixed-traffic Flow Microscopic Simulation Model

充分考虑中国城域混合交通流的特点,利用马尔可夫过程理论对个体运动轨迹、行进方向及行为冲突进行建模,建立了由汽车、自行车和行人构成的混合交通流微观模型。在此基础上,进一步对个体交通行为进行描述和算法设计,并对西安市古城墙内区域各主干道混合交通流的交通行为进行了模拟验证。仿真表明,该模型具有结构简单、层次清晰和可扩展性强等优点。

According to the characters of urban mixecl-traffic flow and the theory of Markov process, three individual models were proposed, which concentrated on motion trajectory, marching direction and behavior conflict respectively. Thereafter the mixed-traffic flow microscopic model, which was constituted of automobiles, bicycles and pedestrian, was constructed and realized. Furthermore, description and algorithm on individual traffic behavior were given. Finally, mix-traffic flow model of the main avenues of centre-area in Xi＇an was simulated and testified. Through the simulation results, this model has advantages such as simple structure, clear layer and high extensibility, etc.