MindTap Engineering for Garber/Hoel's Traffic and Highway Engineering, 5th Edition, [Instant Access], 1 term (6 months)
5th Edition
ISBN: 9781305581159
Author: Nicholas J. Garber; Lester A. Hoel
Publisher: Cengage Learning US
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Question
Chapter 8, Problem 12P
To determine
Phase numbers at eight phase signals in which left turn phasingthe conventional numbering of phases and the relationship which is given on all
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Check out a sample textbook solutionStudents have asked these similar questions
If the all-red time required for pedestrian
crossing at a two-phase signal is 12 s and the
average normal flow for the two roads, A and
B was given as 525 and 375, respectively and
the saturation flow was given as 1650 and
1200 respectively. Find the green time in
seconds required for road A.
For designing a 2-phase fixed type signal at an intersection having North-South
and East-West road where only straight ahead traffic permitted, the following data
are available.
Parameter Design North
Hour
Flow (PCU/hr)
1000
2500
South
700
2500
East
900
3000
West
550
3000
Saturation Flow
(PCU/hr)
Total time lost per cycle is 12 seconds. The cycle length (seconds) as per Webster's
approach is
Q4: a. At a certain at grade intersection, it's decided to use a 4 phases traffic
signal for the four approaches shown below.
South
Approach
Width (m)
Actual flow (DHV) pe/hr
North
East
West
7
8
12
10.5
331
427
1104
715
Left turn vehicles of
478
630
1953
1047
saturation flow
Assuming the following for each phase:
Starting delay and falling discharge time = 3 sec, amber time = 5 sec, all red = 1
sec, red/amber I sec.
Find the optimum cycle time and the controller green for each phase.
Chapter 8 Solutions
MindTap Engineering for Garber/Hoel's Traffic and Highway Engineering, 5th Edition, [Instant Access], 1 term (6 months)
Ch. 8 - Prob. 1PCh. 8 - Prob. 2PCh. 8 - Prob. 3PCh. 8 - Prob. 4PCh. 8 - Prob. 5PCh. 8 - Prob. 6PCh. 8 - Prob. 7PCh. 8 - Prob. 8PCh. 8 - Prob. 9PCh. 8 - Prob. 10P
Ch. 8 - Prob. 11PCh. 8 - Prob. 12PCh. 8 - Prob. 13PCh. 8 - Prob. 14PCh. 8 - Prob. 15PCh. 8 - Prob. 16PCh. 8 - Prob. 17PCh. 8 - Prob. 18PCh. 8 - Prob. 19PCh. 8 - Prob. 20PCh. 8 - Prob. 21PCh. 8 - Prob. 22PCh. 8 - Prob. 23PCh. 8 - Prob. 24PCh. 8 - Prob. 25PCh. 8 - Prob. 26PCh. 8 - Prob. 27PCh. 8 - Prob. 28P
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