Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Question
Chapter 12, Problem 25P
To determine
The assignment of the vehicle trips by the use of all or nothing assignment and to make a list of links in the network and indicate the volume assigned to each.
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hree routes connect an origin and a destination with performance functions: ?1=8+0.5?1; ?2=1+2?2; and ?3=3+0.75?3; with the x’s being the traffic volume expressed in thousands of vehicles per hour and t’s being the travel time expressed in minutes. If the peak hour traffic demand is 3400 vehicles, determine user equilibrium traffic flows. [Hint: Note that one of the paths will not be used under the equilibrium condition
The following cross-classification data have been developed for a European city transportation
study area.
House Hold (HH) Autos/HH (%) Trip Rate/Auto
(%)
Income
Trips (%)
($)
High Med Low O1+2 0 1 +2 HBW HBO NHB
10,000 0 30 70 48 48 4 2.0 6.00 28.5 38
34
28
50 | 4 72| 24 2.5 7.5 30.0 38
2 53 45
20,000
30,000
40,000
50,000 50 50 00 19 81 7.5 12.0 39.0 20
50
34
28
10 70
20
4.0
9.0
33.0
35
34
31
20
75
5 1 32 57 5.5 10.5 36.0 27
35
38
37
60,000 70 30
43
40
0010 90 8.0 13.0 41.0 16
44
Develop the family of cross-classification curves and determine the number of trips produced (by
purpose) for traffic zone containing 1000 houses with an average household income of $30,000.
(Use high = 55,000; medium 25,000; low = 15,000.)
A simple road network shown below has two way links. The travel time
in minutes for zero volumes is also shown. Using Dijkstras algorithm,
determine the following:
1. Minimum path and minimum travel time from zone B to C. Show
all necessary diagrams
2. Minimum path and minimum travel time from zone A to D. Show
all necessary diagrams
Chapter 12 Solutions
Traffic and Highway Engineering
Ch. 12 - Prob. 1PCh. 12 - Prob. 2PCh. 12 - Prob. 3PCh. 12 - Prob. 4PCh. 12 - Prob. 5PCh. 12 - Prob. 6PCh. 12 - Prob. 7PCh. 12 - Prob. 8PCh. 12 - Prob. 9PCh. 12 - Given a table with production and attraction data,...
Ch. 12 - Given a table with production and attraction data,...Ch. 12 - Prob. 12PCh. 12 - Prob. 13PCh. 12 - Prob. 14PCh. 12 - Prob. 15PCh. 12 - Prob. 16PCh. 12 - Prob. 17PCh. 12 - Prob. 18PCh. 12 - Prob. 19PCh. 12 - Prob. 20PCh. 12 - Prob. 21PCh. 12 - Prob. 22PCh. 12 - Prob. 23PCh. 12 - Prob. 24PCh. 12 - Prob. 25PCh. 12 - Prob. 26PCh. 12 - Prob. 27PCh. 12 - Prob. 28P
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