Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Question
Chapter 11, Problem 25P
To determine
The steps in the four-step travel demand forecasting process where feedback can occur and thefeedback loop which directly affects land use.
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Determine the trip distribution matrix using "Gravity Model" of transport system with
given the data:
Trip Production of Zones 1, 2 and 3, correspondingly are 500, 600, and 800 tpd
Trip Attraction of Zones 1, 2 and 3, correspondingly are 600, 700 and 600 tpd
The present trip ends and travel time matrix between the zones are shown in Tables 6.75 and 6.76,
respectively. Travel impendance factor between the zones may be assumed to be e-ti. The socio-economic
adjustment factors between the zones may be assumed to one. Calculate the trip interchanges between
the zones by using the gravity model.
TABLE 6.75
Zones Trips produced Trips attracted
1
2
3
2500
3300
3200
TABLE 6.76
1 2 3
1-15 20
2 15
10
3 20 10
I
3000
4000
2000
4. The present trip ends and travel time matrix between the zones are shown in Tables 6.75 and 6.76,
respectively. Travel impendance factor between the zones may be assumed to be e-tij, The socio-economic
adjustment factors between the zones may be assumed to one. Calculate the trip interchanges between
the zones by using the gravity model.
TABLE 6.75
Zones Trips produced Trips attracted
1
2500
3000
2
3300
4000
3
3200
2000
TABLE 6.76
1 2 3
1
15 20
2 15
10
3 20 10
Chapter 11 Solutions
Traffic and Highway Engineering
Ch. 11 - Prob. 1PCh. 11 - Prob. 2PCh. 11 - Prob. 3PCh. 11 - Prob. 4PCh. 11 - Prob. 5PCh. 11 - Prob. 6PCh. 11 - Prob. 7PCh. 11 - Prob. 8PCh. 11 - Prob. 9PCh. 11 - Prob. 10P
Ch. 11 - Prob. 11PCh. 11 - Prob. 12PCh. 11 - Prob. 13PCh. 11 - Prob. 14PCh. 11 - Prob. 15PCh. 11 - Prob. 16PCh. 11 - Prob. 17PCh. 11 - Prob. 18PCh. 11 - Prob. 19PCh. 11 - Prob. 20PCh. 11 - Prob. 21PCh. 11 - Prob. 22PCh. 11 - Prob. 23PCh. 11 - Prob. 24PCh. 11 - Prob. 25PCh. 11 - Prob. 26PCh. 11 - Prob. 27P
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