A horizontal curve is being designed through mountainous terrain for a four$-$lane road with lanes that are $10ft$ wide. The central angle $()$ is known to be $40$ degrees, the tangent distance is $520ft,$ and the stationing of the tangent intersection $(\frac{?}{PI})$ is $2600+00.$ Under specified conditions and vehicle speed, the roadway surface is determined to have a coefficient of side friction of $0\mathrm{.}08,$ and the curve's superelevation is $0\mathrm{.}09f\frac{t}{f}t.$ What is the stationing of the PC and PT and what is the safe vehicle speed?