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With the deepening of economic globalization and China's accelerating process of urbanization & industrialization, the motorways are experiencing a stage of rapid development. The number of private cars and buses on the road is increasing rapidly, which intensifies traffic congestion, vehicle collision and other abnormal traffic problems. In developing countries, one person dies in traffic accidents every four minutes. Therefore, a set of intelligent transportation system is essential, through which traffic conditions (such as retrogradation behavior of vehicles, collision behavior of vehicles) are monitored, and a large quantity of traffic data (such as the speed change, traffic flow states) are analyzed, to manage the vehicle, reduce the pressure of road travel, minimize the loss caused by abnormal traffic and reduce the potential safety hazard.
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