A small town has been divided into three traffic zones. An origin-destination survey was conducted earlier this year and yielded the number of trips between each zone as shown in the table below. Travel times between zones were also determined. Provide a trip dis- tribution calculation using the gravity model for two iterations. Assume K =1. The following table shows the number of productions and attractions in each zone. Zone 2 3 Total Productions Attractions 250 395 450 300 1000 180 425 1000 The survey's results for the zones' travel time in minutes were as follows. Zone 2 3 1 2 1 3 5 8 1 3 The following table shows travel time versus friction factor. Time (min) 3 4 5 7 Friction Factor 82 52 50 41 39 26 20 13 23

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A small town has been divided into three traffic zones. An origin-destination survey was
learlier this year and yielded the number of trips between each zone as shown
in the table below. Travel times between zones were also determined. Provide a trip dis-
tribution calculation using the gravity model for two iterations. Assume K, = 1.
The following table shows the number of productions and attractions in each
zone.
Zone
2
3
Total
450
300
425
Productions
250
1000
Attractions
395
180
1000
The survey's results for the zones' travel time in minutes were as follows.
Zone
1
2
3
2
1
8
3
1
3
5
The following table shows travel time versus friction factor.
Time (min)
1
2
3
4
5
6
8
Friction Factor
82
52
50
41
39
26
20
13
7,
621
-23
Transcribed Image Text:A small town has been divided into three traffic zones. An origin-destination survey was learlier this year and yielded the number of trips between each zone as shown in the table below. Travel times between zones were also determined. Provide a trip dis- tribution calculation using the gravity model for two iterations. Assume K, = 1. The following table shows the number of productions and attractions in each zone. Zone 2 3 Total 450 300 425 Productions 250 1000 Attractions 395 180 1000 The survey's results for the zones' travel time in minutes were as follows. Zone 1 2 3 2 1 8 3 1 3 5 The following table shows travel time versus friction factor. Time (min) 1 2 3 4 5 6 8 Friction Factor 82 52 50 41 39 26 20 13 7, 621 -23
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