中文摘要：

城市区域交通拥堵形势日趋严峻，如何有效地评价城市交通运行状态，为交通控制提供决策支持，是城市交通管理面临的迫切需求。旨在通过建立城市区域交通优化仿真模型，从模型构成、参数标定、指标评价等方面对城市区域交通进行分析。最后以上海市五角场核心区域为例，在交通仿真软件Synchro中对五角场核心区域道路网进行模型仿真，并对仿真结果进行评价。分析结果显示，该研究对于城市区域交通优化改善评价具备一定的合理性和有效性。

英文摘要：

With the increasingly serious situation of traffic congestion in urban area, how to evaluate the urban traffic operational condition effectively and give suggestions to traffic management professionals for decision making, is one of the urgent issues in the area of traffic management. The study aims to establish an urban region traffic optimization model which includes model building, parameter calibration, evaluation index to analysis the road traffic of the whole city area. Finally, a case study was given, which took Pentagonal Square core area in Shanghai as an example, and established its simulation model with microscopic simulation software Synchro, and got its corresponding evaluation index, from which we can come to the conclusion that the study in this paper can give reasonable evaluation of the improvement measures in traffic management.