The optimum speed and the optimum density for the high-speed freeway data set is assumed to be 40 miles per hour and 50 vehicles per mile per lane, respectively. Determine the equations for the Greenberg, Underwood, and Northwestern models, and construct flow-speed-density relationships in a fashion similar to Figure Question 1b.

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)
5th Edition
ISBN:9781305084766
Author:Saeed Moaveni
Publisher:Saeed Moaveni
Chapter8: Time And Time-related Variables In Engineering
Section8.5: Engineering Variables Involving Length And Time
Problem 2BYG
icon
Related questions
Question

The optimum speed and the optimum density for the high-speed freeway data set is assumed to be 40 miles per hour and 50 vehicles per mile per lane, respectively. Determine the equations for the Greenberg, Underwood, and Northwestern models, and construct flow-speed-density relationships in a fashion similar to Figure Question 1b.

60
50
Greenshields
Greenberg
40
Underwood
30
Nanhwastarn
20
10-
50 60 70 00
10
20
30
40
06
100
110
120
130
Density (veh/mile/lane)
2400
2000
1600
1200
800
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 (vehhr/lane)
Figure Question 1b
Flow (veh/hr/lanel
Speed (miles/hr)
(4/1ju) paads
Transcribed Image Text:60 50 Greenshields Greenberg 40 Underwood 30 Nanhwastarn 20 10- 50 60 70 00 10 20 30 40 06 100 110 120 130 Density (veh/mile/lane) 2400 2000 1600 1200 800 400 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 (vehhr/lane) Figure Question 1b Flow (veh/hr/lanel Speed (miles/hr) (4/1ju) paads
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Capacity and level of service at intersections
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Engineering Fundamentals: An Introduction to Engi…
Engineering Fundamentals: An Introduction to Engi…
Civil Engineering
ISBN:
9781305084766
Author:
Saeed Moaveni
Publisher:
Cengage Learning