*The density value was estimated from a segment of NLEX to be 12 veh per km at a speed of 70 kph. 4. What jam density value will yield a typical highway design speed of 100kph Determine the jam density. a) 50 vph b) 40 vph c) 45 vph d) 60 vph 5. What will be corresponding space between vehicles at jam density, if the average length of vehicle is 6 m long. a) 23m b) 28m c) 19m d)25m

*The density value was estimated from a segment of NLEX to be 12 veh per km at a speed of 70 kph. 4. What jam density value will yield a typical highway design speed of 100kph Determine the jam density. a) 50 vph b) 40 vph c) 45 vph d) 60 vph 5. What will be corresponding space between vehicles at jam density, if the average length of vehicle is 6 m long. a) 23m b) 28m c) 19m d)25m

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter6: Fundamental Principles Of Traffic Flow

Section: Chapter Questions

Problem 15P

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Similar questions

A freeway traffic stream was observed to have a density of 22.0 veh/mi/ln when the mean speed was 55.0 mi/h. On another occasion at the same location, the jam density was found to be 132 veh/mi/ln. Assume Greenshields' model of traffic flow applies. The optimum speed (in mi/h) is: a) 22.0 b) 33.0 c) 55.0 d) 66.0 e) None of he above
The SLEX was designed to carry a free-flow speed of 50 kph and a capacity of 4000 veh/hr. At a certain point near the intersection of a road leading to Laguna, there were 3600 vehicles counted in one hour. Assume a linear relationship. Determine the space-mean speed. Determine the jam density.
Subject : Transportation engineering Give all right solutions. A free flow speed of 60 kph and a capacity pf 3600 vehicles per hour. If in a given hour 3344 vehicles were countered at a specified point along this highway, compute the following A) jam density (in veh/km and 3 decimals) B) space mean speed of these 3344 vehicles. (Kph and 3 decimals) C) density of the 3344 vehicles. (Veh/km and 3 decimals)
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.
Construct the linear relationship between the speed mean speed and the density for a sample of data which collected for a portion of highway indicated * .that the maximum free flow was 2000vph and the jam density was 100 vpkm
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SITUATION: A section of the extension of the NLEX connecting Pampanga and Tarlac is known to have a free flow speed of 50 kph and a capacity of 3200 veh/hr. In a given hour, 2000 vehicles were counted at a specified point along the highway section. Determine the speed at maximum flow condition Determine the jam density in veh/km. Determine the density at flow condition.
Determine i) capacity, ii) jam density, iii) speed and iv) density at capacity of a traffic stream if the speed density relationship follows relation v = 17.2 ln(228/k), if v is space mean speed in km/hr and k is the density at veh/km.
By assuming a linear speed-density relationship, the mean free flow speed in a highway lane equals 55 mph, and the jam density is observed to be 170 vpm. a. Plot the q-k-u curves (3 curves). b. Write down the speed-density and flow-density equations. c. Compute the maximum flow. d. Compute speeds and densities corresponding to a flow of 900 vph. e. Calculate average headway, gaps, clearance, and spacing at maximum flow and at jam density.
The SLEX was designed to carry a free-flow speed of 50 kph and a capacity of 4000 veh/hr. At a certain point near the intersection of a road leading to Laguna, there were 3600 vehicles counted in one hour. Assume a linear relationship. Determine the space-mean speed (in kph)(round off to whole number). Determine the jam density (in veh/km)(round off to whole number).
A freeway traffic stream was observed to have a density of 22.0 veh/mi/ln when the mean speed was 55.0 mi/h. On another occasion at the same location, the jam density was found to be 132 veh/mi/ln. Assume Greenshields' model of traffic flow applies. The flow rate (in veh/h/ln) at the time when the mean speed was 55.0 mi/h is: 990 1210 1540 2178 None of the above
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