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Road Curves are regular bends provided in the lines of communication like roads, railways etc. and also in canals to bring gradual change of direction. Curves provided in the horizontal plane are known as Horizontal Curves. They may be circular or parabolic. Circular Curves provided on roads are classfied into 4 types: * Simple Curve * Compound Curve * Reverse or Serpentine Curve * Deviation Curve ==Simple Curve== A curve is said to be simple when it has same radius throughout and consists of single arc of circle with two tangents meeting at actual point of intersection of roads. In the diagram shown B is the actual point of intersection of roads. 〔surveying volume 1 by Dr B.c Punmia〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「road curve」の詳細全文を読む スポンサード リンク
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