A six$-$lane divided highway is on level terrain with $2$ access points per mile and has $10-$ft

lanes, with a $5-$ft shoulder on the right side and a $3-$ft shoulder on the left side. The $15-$min

maximum flow rate is $2890$ veh$/$h$,$ and the peak$-$hour volume is $3400$ veh$/$h$.$ There are $5\%$

SUTs and $5\%$ TTs in the traffic stream. No speed studies are available, but the posted speed

limit is $55$ mi$/$h$.$ Determine the level of service.