A $3-$lane rolling terrain freeway basic segment on I$-287$ in Harding Township, NJ$,$ exhibits a

directional hourly volume of $3700$ vehicles with $1105$ vehicles in the most congested $15-$minute

period. Observing that the traffic stream is composed of $15\%$ single$-$unit trucks and $10\%$ tractor$-$

trailer trucks, estimate $1)$ the Heavy Vehicle Adjustment Factor$($fhv $)$ and $2)$ the Analysis Flow Rate

$($vp $)$