Abstract: After analyzing the characteristics of pedestrian transportation，its simulation model based on Cellular Automaton（CA） is proposed，which makes CA and rule description as its theoretical foundation.Then a pedestrian avoiding model is put forward.For its high comparability between the model and real world，this technique solves the problem met by mathematic modeling when simulating pedestrian transportation.Finally a simulation experiment prototype system of hybrid transportation flows is developed by combining the pedestrian CA model and the pedestrian avoiding model.The results of simulation show that this technique can simulate the realistic transportation condition availably，indicating its extensive applied foreground in fields such as city transportation programming，transportation demand management and transportation control.

Key words: Cellular Automaton（CA）, pedestrian transportation flow, system simulation, conflicting/avoiding model

摘要： 在分析行人交通特性后，以元胞自动机（CA）和规则描述为理论基础，提出基于CA的行人仿真模型，以此建立相对于其他交通对象的行人避让模型。该方法以模型与现实世界的高相似性有效克服了精确数学模型在仿真行人交通时的难题。结合行人CA模型和行人避让模型开发了混合交通流仿真试验原型系统。仿真结果表明，该方法有效地模拟了现实交通状况，在城市交通规划、交通需求管理和交通控制等领域有着广泛的应用前景。

关键词: 元胞自动机, 行人交通流, 系统仿真, 冲突/避让模型