A two$-$lane highway is being designed with a $70-mph$ design speed, and at one section, a vertical curve must be designed to connect grades of $+1\mathrm{.}0\%$ and $-2\mathrm{.}0\%.$

A$)$ Determine the minimum length of curve to meet the stopping sightdistance.

B$)$ Determine the minimum length of curve to meet the passing sight distance.

C$)$ How much longer would the curve be if you select the passing sight distance? What issues do you see if you employ this sight distance?