Apply the Edie two-regime model to the data set shown in Figure Question 1a. Select what you consider to be appropriate flow parameters and breakpoint location between the free-flow regime and the congested-flow regime. Summarize your results in a fashion similar to Figure Question 3. Perform a sensitivity analysis of the effect of flow parameters and breakpoint location on the suitability of the resulting flow-speed-density relationships.

Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter9: Capacity And Level Of Service For Highway Segments
Section: Chapter Questions
Problem 17P
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Apply the Edie two-regime model to the data set shown in Figure Question 1a. Select what you consider to be appropriate flow parameters and breakpoint location between the free-flow regime and the congested-flow regime. Summarize your results in a fashion similar to Figure Question 3. Perform a sensitivity analysis of the effect of flow parameters and breakpoint location on the suitability of the resulting flow-speed-density relationships.

60
50 -
40 E
30-
20
....
10 F
40 50 60 70 80
10
20 30
90
100
110
120
130
Density (veh/mile/lane)
2400
2000
1600
1200
B00
400
50 60 70 80 90
10
20
30
40
100
110
120
130
Density (veh/milelane)
60
50
40 -
30
20
10
200
400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600
Flow (veh/hr/lane)
Figure Question 1a
Speed (mles/hr)
Flow (vah/hr/lane)
Speed (miles/hr)
Transcribed Image Text:60 50 - 40 E 30- 20 .... 10 F 40 50 60 70 80 10 20 30 90 100 110 120 130 Density (veh/mile/lane) 2400 2000 1600 1200 B00 400 50 60 70 80 90 10 20 30 40 100 110 120 130 Density (veh/milelane) 60 50 40 - 30 20 10 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 Flow (veh/hr/lane) Figure Question 1a Speed (mles/hr) Flow (vah/hr/lane) Speed (miles/hr)
60
50
Edie
Two-regime linear
40 E
Modified Greenberg
x x x x Three-regime linear
30 -
20 E
10 -
50 60 70 80
10
20
30
40
90
100
110
120
130
Density (veh/mile/lane)
2400
2000
1600
1200
B00
400
10
20
30
40
50
60
70
80
90
100
110
120
130
Density (veh/mile/lane)
60
50
40
30
20
10
200
400
600
800
1000 1200 1400 1600 1800 2000 2200 2400 2600
Flow (veh/hr/lane)
Figure Question 3: Multiregime Models Superimposed on Freeway Data Set
Speed (miles/hr
Flow (veh/hrlane)
(Jusagu poads
Transcribed Image Text:60 50 Edie Two-regime linear 40 E Modified Greenberg x x x x Three-regime linear 30 - 20 E 10 - 50 60 70 80 10 20 30 40 90 100 110 120 130 Density (veh/mile/lane) 2400 2000 1600 1200 B00 400 10 20 30 40 50 60 70 80 90 100 110 120 130 Density (veh/mile/lane) 60 50 40 30 20 10 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 Flow (veh/hr/lane) Figure Question 3: Multiregime Models Superimposed on Freeway Data Set Speed (miles/hr Flow (veh/hrlane) (Jusagu poads
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ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning