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

question 8

Multiple Choice

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

• A)curve is so flat that the length of curve is equal to the length of chord
• B)two portions of the curve along the two tangents on either side of the point of intersection are equal
• C)angles made by the tangent with the horizontal are very small and tangents of those angles are equal to the angles themselves (in radians)
• D)all of the above