An existing horizontal curve on highway has a radius of 465+ # which restricts the posted speed limit on this section of the roadway to only 61.5% of the design speed of the highway. If the curve is to be improved so that it its posted speed will be the design speed of the highway, determine the minimum radius of the new curve, Assume that the rate of superelegatio 0.08 both the existing the new to designed, and fs = 0.16 for 40mph, 0114 for 50mph, 0.12 for COmph and 0.10 for