Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Question
Chapter 8, Problem 11P
To determine
For each approach determine the yellow interval length and howto provide it.
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Students have asked these similar questions
10. For the intersection shown below draw a 3-phase traffic signal operation.
A traffic signal control is being designed for a four-leg intersection on a divided highway with the
characteristics shown in the table below. Assuming the average vehicle length L is 6m, Determine an
appropriate length of the yellow interval for each approach and how you will provide it. Use the
AASHTO recommended deceleration rate and perception-reaction time.
N-S Approaches E-W Approaches
Median width, (m)
6.
3
No. of 3.5 lanes
3
on each approach
Design speed, km/h
60
Grade
-3.5
2.
80
Draw the intersection diagram for the given traffic volume summary of a T-intersection: (base on the image)
Chapter 8 Solutions
Traffic and Highway Engineering
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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- The geometric and traffic characteristics are shown below, determine a suitable signal phasing system and phase lengths for the intersection using the Webster method. Show a detailed layout of the phasing system and the intersection geometry used. South Approach S6 fi North East West Approach 56 fi Approach Approach 68 f Арproach Widih Peak-hour approach volume Left turn Through movement Right turn PHF Confilicting pedestrian volume 900 ped/hr 1200 ped/hr 1200 ped/hr 900 ped/hr 133 420 73 168 134 373 135 563 516 178 140 169 0.95 0.95 0.95 0.95 Assume the following saturation flows: Through lanes: 1760 vehIn/h Through and right lanes: 1540 veh/In/h Left lanes: 1100 veh/n/h Left and through lanes: 1320 veh/in/h Left, through, and right lanes: 1210 veh/n/harrow_forwardFor the geometric and traffic characteristics shown below, determine a suitable signal phasing system and phase lengths for the intersection using the Webster method. Show a detailed layout of the phasing system and the intersection geometry used. North South East West Арproach 56 ft Approach 56 ft Арproach 68 ft Аpproach 68 ft Approach Width Peak-hour approach volume Left turn Through movement Right turn PHF Confilicting pedestrian volume 900 ped/hr 73 373 133 168 134 420 563 516 140 135 169 178 0.95 0.95 0.95 0.95 1200 ped/hr 1200 ped/hr 900 ped/hr Assume the following saturation flows: Through lanes 1600 veh/In/h Through and right lanes 1400 veh/In/h Left lanes 1000 veh/In/h Left and through lanes 1200 veh/In/h Left, through, and right lanes 1100 veh/In/harrow_forwardA traffic signal control is being designed for a four-leg intersection on a divided highway with the characteristics shown in the table below. N-S Approaches E-W Approaches 16 12 3 2 50 40 0% 3% Determine the minimum green times (in s) for each approach if the effective crosswalk width in each direction is 8 ft and the number of pedestrians crossing during an interval is 24 in the N-S direction and 29 in the E-W direction. (Assume the average speed of pedestrians is 3.5 ft/s, and that it is feasible to disregard the yellow change and red clearance intervals.) S G min, N-S Gmin, E-W = Median width, (ft) Number of 12 ft lanes on each approach Design speed, mph Grade = Sarrow_forward
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