A six$-$lane divided highway is on a rolling terrain. The peak$-$hour factor is $0\mathrm{.}80.$ There are $6\%$ large trucks, $2\%$ buses, and $2\%$ recreational vehicles. A significant percentage of nonfamiliar roadway users are in the traffic stream $($the driver population adjustment factor is estimated as $0\mathrm{.}95).$ Free flow speed is given as $55$ mi$/$h$.$ If we want the level of service to be at C$,$ what should the maximum peak hour traffic volume be$?$ show all steps, please.