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Overspeed is a major factor causing road traffic accidents in China. Since the early 1980s, researchers have developed various algorithms to extract speed information from traffic image sequences. In this paper, an algorithm is proposed to evaluate the speed of the accident vehicle by videos. With human interaction, control points are refined by corner detector and then used for two-dimension geometric...
The development of information technology provide foundation to collect a large number of data for urban traffic management. These traffic data can be used to monitor traffic state surrounding the bottleneck and to analysis the evolution of the temporal and spatial rules of congestion. Based on the historical detector data, the new indexes have been proposed in this paper to evaluate the severity...
This paper proposes and assesses a lane-blocking detection methodology using relative speed and the correlations of lane changing trajectories of the vehicles to detect a lane-blocking incident. Using a microscopic traffic simulation environment, we show that the proposed algorithm has higher detection rate and lower false alarm rate than an existing algorithm using lane changing probabilities when...
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