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美国在1995年废除了国家最高限速法案,将限速的权限返还到各州。美国限速管理的特点有:一是限速分为法定限速和交通信号限速。法定限速值由州立法机关规定;交通信号限速值通常根据交通流、道路设施、土地利用状况等因素确定,通过限速标志、标线标明。交通信号限速与法定限速不一致时,适用交通信号限速,交通信号限速值可能高于或低于法定限速值。二是定期检查修订法定限速。限速检查主要考虑设计速度、车辆运行速度、事故记录和执法情况4
The United States abolished the National Maximum Speed Limit Act in 1995 and returned speed limits to all states. The United States speed limit management features are: First, the speed limit is divided into legal speed limit and traffic signal speed limit. The legal speed limit is set by the state legislature. Traffic speed limit is usually determined by traffic flow, road facilities, land use status and other factors. Traffic signal speed limit is inconsistent with the statutory speed limit, the applicable traffic signal speed limit, the traffic signal speed limit may be higher or lower than the legal limit value. Second, regular inspection and revision of the legal speed limit. Speed Limit Check Main consideration of design speed, vehicle speed, incident record and enforcement 4