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In the Greenshields model, if jam density is 189 pc/mi/In, free-flow speed is 78 mph, what is the speed at the density of 35 pc/mi/In? D A. 60 mph B. 70 mph C. 63.5 mph D. 65 mph 13. At a counting station along a highway, the annual (365-day) cumulative vehicle counts were: 7,301,624 vehicles (eastbound) and 6,988,594 vehicles (westbound). What is the AADT at this location? C A. 20,004 veh/day B. 19,147 veh/day C. 39,151 veh/day D. It depends on the direction of interest At an intersection approach, the following volumes are recorded in 4 consecutive 15- minutes: 90, 111, 102, 84 vehicles/15-minutes. What is the PHF? A A. 0.872 B. 1.147 C. 0.869 D. None of the above