the first year AADT on a $4-$lane freeway located in an urban area is expected t obe $65,000$ veh$/$day$.$ The growth rate of the two$-$axle, $4-$tire, single unit trucks is expected to be $1\mathrm{.}5\%$ per annum during the five years of the pavement life and will increase to $3\%$ per annum for the remaining life of the pavement. The growth rate for all other categories of vehicles is expected to be $2\%$ per annum throughout the life of the pavement. The design life of the pavement is $25$ years and the projected vehicle mix during the first year is: