Problem $2[12pts]$

A $2-$lane road enters a historic downtown area where it must curve to the south to go

between two historic buildings. The road has $12$ ft lanes and $4\mathrm{.}5$ ft shoulders both

sides$).$ The edge of the shoulder is only $10$ ft from the face of the closest building. Local

roadway design policy is that superelevation rates must not exceed $6\%.$ Will sufficient

SSD be available for vehicles moving at $60$ mph through this horizontal curve? $($Assume

max $f$ for the design speed of $60$ mph $)$