Design of both summit and valley curves is based on the assumption that the

Question

Quizplus · Accepted Answer

The design of both summit and valley curves assumes that the curve is flat enough for the curve length to equal the chord length, the curve portions along the tangents on either side of the intersection point are equal, and the angles made by the tangent with the horizontal are small enough that their tangents (in radians) are approximately equal to the angles themselves. These assumptions simplify the geometric design of roads and railways.

Design of Both Summit and Valley Curves Is Based on the Assumption