Determine the crash modification factor $($using Table $5\mathrm{.}14)$ that can be used to estimate the change in frequency of the crash type targeted by a proposed improvement that will widen a two$-$lane rural highway from $18$ to $22ft$ if the highway has an AADT of $1250$ veh$/$day$.$

In Problem $1,$ if there are an average of $25$ crashes per year on the segment proposed for improvement, and $62\%$ of the crashes are of the type targeted by the improvement, estimate the expected number of crashes $($per year$)$ after the