An undivided multilane highway segment has two $11-$ft lanes in the eastbound direction with no

shoulders and a $55m\frac{i}{h}r$ speed limit$.$ This highway segment has $40$ access points on a $1\mathrm{.}25$ mile $,$

$2\mathrm{.}5\%$ upgrade. During the most congested $15-$min. period within the peak hour there are $755$

vehicles and $12\%$ of these are heavy vehicles with a $70\frac{\%}{30}\%$ mix of single$-$unit and tractor$-$trailer

trucks. What are the estimated speed, density, and LOS of the upgrade section? $($Hints: Consider

the definition of the PHF when calculating $v_p,$ will $S=FFS?).$ Use transportation equations