A section of highway has a capacity of 3750 veh/hr and free flow speed of 57.5 mph.  Speed ​​and density has exhibited linear relationship.  What is the average spacing (in ft) of vehicles at capacity?  C. 0.629 A. 40.48 B. 20.20 C. 62.61 D. 65.22 QUESTION

A section of highway has a speed-flow relationship of the form q = a*u*u + b*u (a and b are coefficients to be determined). It is known that at capacity (which is 3100 veh/h) the space-mean speed of traffic is 35 km/h. Determine the speed when the flow is 1500 veh/h and the free-flow speed.

A freeway with two northbound lanes is shut down because of an accident. At the time of theaccident, the traffic flow rate is 1200 vehicles per hour per lane and the flow remains at this level.The capacity of the freeway is 2200 vehicles per hour per lane when not impacted by an accident.The freeway is shut down completely for 20 minutes after the accident and then one lane is openfor 20 minutes and finally both lanes are opened (40 minutes after the accident). What is theaverage delay per vehicle resulting from the accident (assuming D/D/1 queuing)?

A section of the roadway has the following flow-density relationship q=50k-0.4k^2 [q is in veh/h unit and k in vh/mile]. What is the flow, speed,and density at capacity? What is the density when highway is at one-third of its capacity.

A segment of rural freeway is being designed for a FFS of 70 mph through rolling terrain. The directional (i.e. one-way) design volume is 3,000 vehicles per hour. If 10% of the design volume is expected to be heavy vehicles (i.e. trucks and buses), what is the heavy vehicle adjustment used to determine the flow rate? Provide you answer to the nearest hundredths. Response Feedback: f₁ HV 1 1+ · + P ₁ (E₁ − ¹) T T -where PT-0.1, ET=3.0

A lane on a freeway displays the following characteristics: (a) the average headway between vehicles is 2.8s, and (b) the average spacing between vehicles is 235 ft. What is the rate of flow for the lane? What is the density of traffic in the lane? What is the average speed (in mph)?

The recorded number of vehicles on a 1.2 km stretch of highway is 39. Calculate the density of traffic in veh/km at the portion of the highway.

An existing 6-lane (3-lanes in each direction) divided multilane highway with a free flow speed of 45 mph has expected peak hourly volumes of 4000 vph, with 15% trucks, and no buses or RVs. The PHF is 0.90. The highway in question is in generally rolling terrain. a. Find the traffic flow rate in units of vph b. Find the heavy vehicle factor in veh/pc c. Find the demand flow rate in units of pcphpl

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Measurements from a single-lane roadway reveal that the average spacing and headway between passing vehicles are 200 ft and 2.4 seconds, respectively. What is the flow [veh/hr], density [veh/mi] and average speed [mi/hr] of traffic on this roadway?