:- Sign false or true for the following: 1. Uninterrupted and interrupted flow are terms describing the quality of traffic flow. 2 Peak hour factor (PHF) used to convert the peak hour volume to a peak rate of flow. 3. The maximum rate of flow is reached when the product of increasing density and decreasing speed results increasing flow. 4. The density at which all movement stop is called critical density. 5. Time mean speed is always less than space mean speed.

:- Sign false or true for the following: 1. Uninterrupted and interrupted flow are terms describing the quality of traffic flow. 2 Peak hour factor (PHF) used to convert the peak hour volume to a peak rate of flow. 3. The maximum rate of flow is reached when the product of increasing density and decreasing speed results increasing flow. 4. The density at which all movement stop is called critical density. 5. Time mean speed is always less than space mean speed.

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter10: Capacity And Level Of Service At Signalized Intersections

Section: Chapter Questions

Problem 3P

See similar textbooks

Similar questions

A section of highway has a speed–flow relationship of the form q = au2 + bu, where q is the traffic flow in veh/h, u is the space-mean speed of traffic in mi/h, and a and b are unknown parameters. It is known that at capacity (which is 3100 veh/h) the spacemean speed of traffic is 28 mi/h. Determine the speed when the flow is 1500 veh/h and the free-flow speed.
Plz solve fast! A traffic stream display average vehicle time headway of 2 sec at space mean speed 60 km/hr compute average space headway, flow rate and density for traffic stream?
1. There are 3 vehicles observed in a 100 m section of McArthur highway. If the average time headway is 4 sec., compute the space mean speed of the vehicles in kph. 2. Three cars travel over a 60 m. section of highway at constant speeds of 19, 20 and 25 m/s. Compute the time mean speed for this condition in m/s (two decimal places 3. If the density of traffic in Aurora Blvd. is 25 veh/km and the average headway is 4 sec., compute the space mean speed in kph
1. Compute the rate of flow in vehicles per hour (two-decimal places) if the space mean speed is 30 mph and the density is 14 vehicles per km. 2. The spacing of the cars moving along the same lane of an expressway is 40 m center to center. If the average velocity of the car is 60 kph, determine the volume of traffic in veh/hr. 3. In a given instant, there were 2400 vehicles counted at a specific point along the portion of the TPLEX. The highway was designed to have a capacity of 3000 veh/hr with a free-flow speed of 60 kph. Compute the maximum value of the jam density in veh/km that could possibly occur during heavy traffic assuming linear speed-density relationship applies
A section of highway having a length 60 m. The observed data are 6 vehicles cross over it in a period of 148 sec., for the following duration: 2.4, 2.8, 3.0, 2.1, 2.2, and 3.5 sec. Estimate the values of the flow rate, density, space-mean speed, time-mean speed, average gap. and average clearance. If the length of vehicles are 6, 5.4, 6.6. 4.8, 7.5, and 6 m respectively?
Assume you are observing traffic in a single lane of a highway at a specific location. You measure the average headway and average spacing of passing vehicles as 3.2 seconds and 20 m, respectively. Calculate the flow, average speed, and density of the traffic stream in this lane. thank you
Six vehicles are observed in a 200 m section of a highway. If the average time headway is 4 sec., determine the density of flow (veh/km), flow of traffic (veh/hr) and space mean speed (kph).
The spacing of moving traffic in a queue can be modeled by s = 3.0 + 0.4u + 0.0025u2, where u is the traffic speed in kilometers per hour. Determine the maximum traffic flow and the speed and density at which this occurs.
Compute the rate of flow in veh/hr if the space mean speed is 35 mph and the density of traffic is 17 veh/km a.959 veh/hr b.956 veh/hr c.957 veh/hr d.958 veh/hr
In a 500 m section of highway, there are 10 vehicles observed. The time headway is 4 sec. Determine the space mean speed of the vehicles in kph.
1) A 6-lane two-way arterial road has a maximum flow of 6,000 vehicles per hour on one direction. It is operating at 3,600 vehicles per hour at time, t=0. A collision occurs, blocking the two lanes, and restricting the flow of the outermostlane to 1,600 vehicles per hour. After 40minutes, the police have cleared the middlelane from accident debris; the operating volume at that time increased to 2,400 vehicles per hour.20 minutes past, the innermost lane was finally cleared of the accident. Traffic returns to normalas soon as the queue has already immoderate. a.Determine the maximum length of queue that occurred. b.How long did it take to dissipate the queue? c.If a vehicle entered the road at t=10 minutes, how long will it take for it to leave the traffic?
Traffic flow shows the magnitude of the vehicle headway on average 2.2 seconds at a speed of 50 km/hour. Calculate the density and flow rate for this traffic flow.