Example: design data collection on a rural highway for $16$ hr daily give for a two day in a week are $1800$ and $1200$ vehicle respectively and $2000$ vehicle for other days $,$ with $15\%$ truck and $10\%$ busses $,$ if you known that percent of $16$ hr volume to $24$ hr volume $=93\%,$determine : $1)$ the DHV after $25$ years for this highway, $2)$the no$.$ of lanes if the design capacity is $1200$ pcu$/$hr