平曲线指的是在平面线形中路线转向处曲线的总称。包括圆曲线和缓和曲线。连接两直线间的线，使车辆能够从一根直线过渡到另一根直线。
最小平曲线半径 minimum radius of horizontal curve
平曲线最小半径 minimum radius of horizontal curve
平曲线最小长度 minimum length of horizontal curve
公路平曲线 Horizontal Alinements
平面曲线 horizontal curve ; plane deformation ; plot
水平曲线点 Horz Curve Points
平曲线半径 Horizontal Curves Radius ; radius of horizontal curve
展平曲线 faired curve
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沿公路平曲线路段的视距关注和地点附近的一个障碍终止公路的或坡道的交集与另一巷道。
Sight distance concerns along horizontal curve sections of highways and at locations where a barrier terminates near a highway's or ramp's intersection with another roadway.
本文提出了由外距长控制设计的带回旋线的平曲线设计方法，包括公式的推导、用步骤和实例。
The paper introduced a design method that the plane curve design of out distance long control with whirl line.
通过回归分别建立了碰撞速度、碰撞角度与平曲线半径及转向、运行速度、硬路肩宽度的相关模型。
The models of collision speed and collision Angle relating to horizontal curve radium and its direction, hard shoulder width and operation speed are derived by regression.
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