$6\mathrm{.}16$ A four$-$lane undivided multilane highway $($two

lanes in each direction$)$ has $3\mathrm{.}3-m$ lanes, $1\mathrm{.}2-m$

shoulders, and $6$ access points per kilometer. It is

determined that the roadway currently operates at

capacity with $PHF=0\mathrm{.}80$ and a driver population

adjustment of $0\mathrm{.}9.$ If the highway is on level terruin

with $8\%$ large trucks and buses $($no recreational

vehicles$)$ and the speed limit is $90k\frac{m}{h},$ what is the

directional hourly volume?