$6\mathrm{.}27$ A six$-$lane multilane highway $($three lanes in each direction$)$ has regular weekday users and currently operates at maximum LOS C conditions. The measured free$-$flow speed is $55m\frac{i}{h}.$ The highway is on rolling terrain with $12\%$ large trucks and buses and $6\%$ recreational vehicles, and the peakhour factor is $0\mathrm{.}92.$ If $17\%$ of all directional traffic occurs during the peak hour, determine the total directional traffic volume.