[HCM for Basic Freeway Segments] A four-lane freeway (two lanesin each direction) has an observed demand volume of 2400 veh/h (onedirection) during the peak hour. The freeway is on rolling terrainand the traffic stream consists of passenger cars and trucks only.The peak-hour factor is 0.75 and the traffic is all commuters. Ifthe peak 15-min demand flow rate under equivalent base conditionsis estimated to be 2000 pc/h/ln, what is the percentage of trucksin this traffic stream?
