a.) You are asked to design a horizontal curve with a 40-degree central angle ( delta = 40) for a two-lane road with 11-ft lanes. The design speed is 70 mi/h and superelevation is limited to 0.06 ft/ft. Give the radius, degree of curvature, and length of curve that you would recommend.
b.)For the horizontal curve in (a), what distance must be cleared from the inside edge of the inside lane to provide adequate stopping sight distance?