A section of highway shows a linear relationship between speed and density during a peak hour. If the free flow speed is 70 mph, capacity is 4210 vehicles per mile. Determine the average vehicle spacing in feet when the density is 1/3 of the jam density. A. 45.75B. 104.10C. 93.25D. 65.80
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A section of highway shows a linear relationship between speed and density during a peak hour. If the free flow speed is 70 mph, capacity is 4210 vehicles per mile. Determine the average vehicle spacing in feet when the density is 1/3 of the jam density.
A. 45.75
B. 104.10
C. 93.25
D. 65.80
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- Eight lane urban freeway is on level terrain with lane width of 12 ft, right shoulder lateral clearance of 4 ft, and 12 ramps over the 6-mi analysis segment. The traffic stream consists of unfamiliar road users. Peak hour volume for a directional weekday of 3200 vehicles is observed with 900 vehicles arriving in the most congested 15-min period. If the traffic stream has 20% large trucks and 20% buses and 15% recreational vehicles, determine the density in pc/mi/In. Round your answer to 3 decimal places. Exclude the unit in the answer box.The following figure shows the Level of Service (LOS) criteria for a multilane highway segment. If the free flow speed is 45 mph and the analysis flow rate is 1800 passenger cars per hour per lane (pc/h/In). What is the actual speed and density of the traffic flow at this specific location? What is the LOs of the location? 70 free-flow Seed 60 mih 56 mi 50 mih 45 mih LOS A 60 50 40 30 20 pomit 45 400 800 1200 1600 2000 2400 Flow Rate (pc/h/in) (uju) paads eg-buasseg abeanyAnalyze the unsignalized intersection below and calculate the optimum cycle length if the intersection will be signalized. Approach E W N S Maximum no. of lanes 5 5 4 4 Direction Through left Through left Through left Through left N Total volume pcu/hr 1,480 370 860 586 1,360 494 2,030 265 Sat. flow rate pcu/hr/lane 2,400 1,700 2,400 1,700 2,200 1,800 2,200 1,800
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