QUESTION 2 Under what traffic conditions will you be able to use the Greenshields model but not the Greenberg model? Give reason for your answer. The table below shows data on speeds and corresponding densities on a section of a rural collector road. If it can be assumed that the traffic flow characteristics can be described by the Greenberg model, develop an appropriate relationship between the flow and density. Also determine the capacity of this section of the road. Speed (mi/h) Density (veh/mi) 60.0 46.0 40.8 39.3 35.7 32.6 30.8 28.4 24.7 18.5 20 32 38 40 45 50 53 57 65 80

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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QUESTION 2
Under what traffic conditions will you be able to use the
Greenshields model but not the Greenberg model? Give
reason for your answer.
The table below shows data on speeds and corresponding
densities on a section of a rural collector road. If it can be
assumed that the traffic flow characteristics can be
described by the Greenberg model, develop an
appropriate relationship between the flow and density.
Also determine the capacity of this section of the road.
Speed (mi/h) Density (veh/mi)
60.0
46.0
40.8
39.3
35.7
32.6
30.8
28.4
24.7
18.5
20
32
38
40
45
50
53
57
65
80
Transcribed Image Text:QUESTION 2 Under what traffic conditions will you be able to use the Greenshields model but not the Greenberg model? Give reason for your answer. The table below shows data on speeds and corresponding densities on a section of a rural collector road. If it can be assumed that the traffic flow characteristics can be described by the Greenberg model, develop an appropriate relationship between the flow and density. Also determine the capacity of this section of the road. Speed (mi/h) Density (veh/mi) 60.0 46.0 40.8 39.3 35.7 32.6 30.8 28.4 24.7 18.5 20 32 38 40 45 50 53 57 65 80
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