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iRAD Software Application – Training Manual

                                                   RBG Labs, IIT Madras












                                                                The simple curve is an arc of a circle. The radius of the

                                                                circle determines the sharpness or flatness of the curve










                                                                    This curve normally consists of two simple curves

                                                                    joined together and curving in the same direction.











                                                                     A reverse curve consists of two simple curves
                                                                     joined together, but curving in opposite direction.















                                                                  It is a curve that has a varying radius Its purpose is
          A deviation curve is simply a combination of
                                                                  to provide a transition from the tangent to a simple
          two reverse curves.
                                                                  curve or between simple curves.



               iRAD App Training Manual, April, 2021                                              Page 97
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