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Q3. A Class I two-lane highway has a base free-flow speed of 110 km/h. Lane width...
2. A class 1, 30mile long rural two-lane highway segment is in rolling terrain. Peak demand is 900 vph (total for both directions), with a 70:30 directional split, and consists of 20% trucks (no rv's or busses). The PHF is 0.80. There are 80% no passing zones, and the base free-flow speed is 55 mi/h. Lane and shoulder widths width are 11 and 2 ft, respectively. There are 6 access points per mile. a) Estimate the average travel speed in...
Q2. Determine the LOS on a regular weekday on a 0.65-km section of a six-lane freeway (three-lane each) with a grade of 2 percent, using the following data: Hourly volume: V = 3000 veh/hr PHF = 0.85 Traffic Composition: Trucks = 10 percent R.Vs = 2 percent Lane width = 3.5 m Terrain = Level Base free-flow speed = 110 km/hr Shoulder width = 2 m Interchange spacing = 1 km Driver population adjustment factor fp = 0.95
A two-lane highway is currently operating with flow rate at 3000 pc/h in rolling terrain. The traffic stream consists of cars and trucks only. A recent traffic count revealed 600 vehicles (total, both directions) arriving in the most congested 15-min interval. What is the percentage of trucks in the traffic stream based on the ATS service measure?