PROBLEM $2$

An existing four$-$lane freeway in an urban area, rolling terrain, $11-$ft lanes, $4-$ft lateral clearance on both sides, serves a peak$-$hour volume of $2,000vph($one direction$),$ with $5\%$ trucks, interchange density of $\frac{1\mathrm{.}0}{?}$ mile, and a PHF of $0\mathrm{.}92.$ Virtually all drivers are weekday commuters of the facility $.$

Find the level of service during the peak hour?

Calculate density?

Note: Need to show all steps. Otherwise, no credit. Correct answer alone does not justify full credit.