基于视频信息的城市路段交通安全状态评估方法研究

he real-time safety state evaluation of urban road traffic is an important research content of intelligent transportation system (ITS) . Focusing on the problem that the evaluation results of the existing traffic safety state real-time evaluation methods are unsatisfactory, this paper proposed a safety state evaluation method of urban road traffic based on video information. Firstly, this paper analyzed the rapid detection method of traffic flow parameters based on video information. Then, it proposed the concept of velocity dispersion of urban road from the point of view of vehicle speed dispersion. Finally, it established a safety state evaluation method of urban road traffic based on road velocity dispersion. The experimental results show that the proposed method can evaluate the safety state level of urban road traffic in real time and in a reasonable way, . And the evaluation result can provide the corresponding basis for the traffic management department to develop effective urban road traffic safety improvement program.