A two$-$lane facility has ${12}^{\text{'}}$ lanes. A $2600\text{'}$ long horizontal curve is being designed using an $e_{\text{m}\text{a}\text{x}}$ of $8\%.$ The

design speed is $50$ mph $.$ The proposed radius is ${2100}^{\text{'}}.$ Normal crown will be $2\%.$ Assume $\frac{2}{3}$ of the

superelevation runoff will be on the tangent and $\frac{1}{3}$ will be on the curve. The PC is at Sta. $24+50\mathrm{.}00$

Find: