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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- A section of highway shows a linear relationship between speed and density during a peak hour. If the free flow speed is 63 mph, and the jam density is 208 vehicles per mile (veh/mile), what is the density in vehicles per mile at capacity? Options: A. 104B. 312C. 416D. 605Traffic on a freeway gives a Greenshield's traffic flow relationship expressed as: Q = 60k-0.16667k? At 10AM, an accident occurs 4 km downstream of an access ramp. The vehicles pull onto the shoulder of the roadway, but traffic passing the accident area slows to 10 kph as drivers survey the damage on the side of the road. A patrol car enters the freeway via access ramp, also at 10AM. Upon entering the freeway, the patrol car notes that traffic on the freeway is moving along at about 40 kph. Determine the following: 1. Capacity flow of the highway 2. Traffic shockwave created by the road accident 3. Time in AM the patrol car will reach the accident zone 4. Plotted traffic shockwave line in the Q-k traffic model diagramEight 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.
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