This article makes an analysis on the car speed by integrating the car accidents with the theory of dynamics, which may be applied in the handling of traffic accidents.
结合机动车辆碰撞事故分析，运用一维碰撞动力学理论，进行了运动速度分析，可望在事故处理中得到应用。
When traffic jams or accidents occur in the work zones, we should take emergency handling mechanism or emergency rescue system for the safety of work zone.
当施工区路段发生交通拥堵或交通事故时，应该采取应急处理机制或紧急救援系统，以保障施工区路段的交通畅通与安全。
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