Question 2If the model in us = In uf - k/kj is applicable to depict the correlation between speed (mi/h) and density (veh/mi) on ahighway segment, and employing regression analysis provides the model constants Y = A + BX (where Y = In u, X = k)as A = 3.9 and B = -0.018, then calculate the:Jam density in veh/km. Express answer into two decimal places. Do not type the unit.veh/km.

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Answered: If the model in us = In uf-k/kj is…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Similar questions

Express the following equation, the traffic density in veh/km when d is in m, in terms of number of vehicles per mile when d is in mi, ft, and yd. (Use the following as necessary: n, d.) 1,000n d k = when d is in mi when d is in ft when d is in yd k = k = k = nd 5280nd 1760nd X X X
Assuming that the expression: u = ue i, can be used to describe the speed-density relationship of a highway, determine the capacity of the highway from the data below using regression analysis. k (veh/mi) u, (mi/h) 43 50 38.4 33.8 53.2 42.3 31 Under what flow conditions is the above model valid?
4. The relation of the density (d) along a roadway to vehicle speed (s: km/h) is given as d = 50- s/2 Determine the flow (q)-speed (s) and flow (q)-density (d) relationships and draw the variations of density-speed, flow-speed and flow-density on. Show the maximum and minimum points on these graphs
Q4 / The data from moving observer methods as shown in the table. Column 1 gives the sample number, column 2 gives the number of vehicles moving against the stream, column 3 gives the number of vehicles that had overtaken the test vehicle, and last column gives the number of vehicles overtaken by the test vehicle. Find the flowrate, density and mean speed. Also, plot the fundamental diagrams of traffic flow. 2 3 4 No. Sample 1 107 10 74 113 25 41 3 30 15 4 79 18 9.
Question 23 The following data were taken on five cars traversing a 1.6-km highway. Car Time (minutes) A 1.7 В 1.8 1.2 D 1.2 E 1.3 Determine the traffic density, in vehicles per km. Express your answer in 2 decimal places.
Results of traffic flow studies on a highway indicate that the flow-density relationship can be described by the expression. q=uk- Uff2 kj If speed and density observations give the data shown below, develop an appropriate expression for speed versus density for this highway. (Use the following as necessary: k. Assume u is in mi/h and k is in veh/mi. Do not include units in your answer.) Speed (mi/h) Density (veh/mi) 57 16 53 28 45 40 40 59 28 69 21 89 17 98 Determine the density (in veh/mi) at which the maximum volume will occur as well as the value of the maximum volume (in veh/h). density at maximum volume maximum volume veh/mi veh/h
It takes about 3 s for a driver having 0.1% alcohol in his system to react to a situation to avoid a collision. If such drivers are traveling on a straight road at 45.5 ft/s and their cars can decelerate at 2.64 ft/s^2, determine the shortest stopping distance d (in feet) from the moment they see the pedestrians. The Correct answer is 528.59. Show solution.
A researcher was observing traffic along one lane of a rural highway. During a 1 minute time interval, ten vehicles were observed travelling 65, 64, 71, 66, 58, 72, 69, 66, 55 and 62 mph. Estimate the average vehicle spacing (ft/veh). Provide your answer to the nearest integer.
For a national highway, the free mean velocity and jam density are 80 kmph and 45 Veh/km respectively. A student mistakenly takes the quadratic relation between the velocity and traffic density in Green-Shield model as shown below: V = All the symbols have the usual meaning. Find the magnitude of error in maximum capacity of the road in Veh/hr (upto two places after decimal)
As shown in the figure below, determine the smallest radius that should be used for a highway if the normal component of the acceleration of a car traveling at 50 km/h is not to exceed 0.6 m/s?. B A
answer if true or false
Speedometer readings for a vehicle (in motion) at 4-second intervals are given in the table. t (sec) 0 4 8 12 16 20 24 v (ft/s) 0 5 17 31 39 38 28 Estimate the distance traveled by the vehicle during this 24-second period using L6, R6 and M3.L6 = R6=M3=

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