采用VISSIM交通仿真软件，对城市隧道内的物理环境进行仿真，可设计出一种基于交通流参数的交通事故自动检测方法。
An automatic accident detection method based on traffic flow parameters will be accessed, through simulating the physical environment of urban tunnel with traffic simulation software VISSIM.
拥有一套交通仿真软件只是学习的开始，而将软件在实际项目中快捷有效地使用所需的技能，则需要一定的时间和努力才能掌握。
Owning a transport simulation software package is only the first step, it will take time and effort to develop essential skills to use it efficiently and effectively in a project.
采用成熟的微观交通流仿真软件及其接口实现和检验交通控制算法是目前交通控制研究的主要方向。
Applying the mature microscopic traffic flow simulation software and its interfaces to implement and test the traffic control algorithm is the main tendency of current traffic control research.
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