A six-lane freeway with three lanes in each direction is on alevel terrain and has 11-ft
lanes with a 4-ft right-side shoulder. The total ramp density is2 ramps per mile. The
directional peak-hour traffic volume is 5400 vehicles with apeak-hour factor of 0.95 and
all familiar users. The traffic stream includes 5% trucks andanother 5% buses and no
recreational vehicles. The city has decided to ban all heavyvehicles from using the
freeway during the peak hour. Compute the level of servicebefore and after the heavy
vehicle ban.