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.
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。
Finally this paper presents the performance of our traffic flow detection radar and the hardware testing platform, which achieves the operation requirement.
最后还给出本课题组研制的车流量检测雷达的测试平台和测试性能指标，达到了实际使用的要求。
It has completed the design of the video traffic flow detection and vehicle recognition system, and realized part of its functions.
完成了视频交通流检测和车辆识别系统的设计和部分功能。
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