2、素间的互动模式和内在机制,研究样本城市的各项交通政策,机制对缓解交通拥挤的效用,从而提出适合样本城市交通发展的政策建议。关键词:城市交通;拥挤模型;系统动力学;仿真StudyonsystemdynamicsmodelofcitytrafficcongestionproblemAbstract:Trafficcongestion is causedby supplyand demandimbalanceinessence, theimbalance factors include thecity'seconomicdevelopment,cit