$3-9.$ A vertical curve connected $-5\%$ grade to a $-2\%$ grade. The elevation of the V$.$P$.$C$.$ is $6,050$ ft $.$

Find the elevation of the P$.$V$.$I., the high point on the curve, and the P$.$ V$.$T$.$ known that.

The vertical curve is part of two lanes two ways highway.

design speed $60m\frac{i}{h},$

PSD parameters are: $m=10m\frac{i}{h},a=1\mathrm{.}5m\frac{i}{h}\frac{?}{s},t1=3\mathrm{.}5s,t2=12\mathrm{.}3s.$

SSD parameter suggests a reaction time up to $14\mathrm{.}5$ s $,$

Solev by traffic engineerin $|5$th edition