A northbound $($NB$)$ freeway is to be designed as a passenger$-$car$-$only facility for an AADT of $35,000$ vpd$.$ It

is estimated that the freeway will have a FFS of $70$ mph$.$ The peak$-$hour factor is estimated to be $0\mathrm{.}85$ with

$65\%$ of the peak$-$hour traffic travelling in the peak direction.

Determine the number of lanes required to provide at least a LOS C using the highest annual hourly volume

and the $30$th highest annual hourly volume.

$($Assume a K factor of $0\mathrm{.}148$ for highest annual hourly volume and a K$30$ of $0\mathrm{.}12$ for the $30$th highest annual

hourly volume$)$

Hint: you will need to perform some trials.