![MindTap Engineering for Garber/Hoel's Traffic and Highway Engineering, 5th Edition, [Instant Access], 1 term (6 months)](https://www.bartleby.com/isbn_cover_images/9781305577398/9781305577398_largeCoverImage.gif)
MindTap Engineering for Garber/Hoel's Traffic and Highway Engineering, 5th Edition, [Instant Access], 1 term (6 months)
5th Edition
ISBN: 9781305577398
Author: Nicholas J. Garber; Lester A. Hoel
Publisher: Cengage Learning US
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 8, Problem 16P
To determine
Using Webster methods for intersection determine suitable signal phasing system and phase length.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Consider the tabulated intersection design data
below, then the number of vehicles stopped during
the red interval for Phase EW is about
..............
vehicles. Assume that Qs is 2000 vphpl and use
Webster's method procedure.
All-red ts (sec)
(sec)
Qa (vph)
Yellow
Lane 1
Lane 2
(sec)
Phase N
500
600
2
3
Phase S
650
550
2
2
2
Phase EW
300
250
2
1
2
а.
13
b.
C.
10
d.
6.
Clear my choice
For the traffic characteristics and signal phasing system shown below, determine suitable phase lengths for the intersection using the Webster method. For each approach, assume one dedicated left-turn lane, one through lane, and one through-right lane.
5. Design signal timing for an intersection with the following details. Assume a total loss
time of 3 seconds per phase. Width of lanes are 12 ft each. Assume that there are 20
pedestrians crossing each of the approaches per cycle. Check the signals for pedestrian
crossing time. Take pedestrian walking speed as 4 ft/s.
Saturation flow rates are: Left-turning: 1600 veh/hr/ln, Through: 1800 veh/hr/In, and Right-
turning: 1700 veh/hr/In
A
488
488
115
1051
217
N
338
-338
(В
Phase I
Phase II
Phase III
J!!!
J↓↓
Yr
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
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- 6. Design signal timing for an intersection with the following details. Assume a total loss time of 3 seconds per phase. Width of lanes are 12 ft each. Assume that there are 20 pedestrians crossing each of the approaches per cycle. Check the signals for pedestrian crossing time. Take pedestrian walking speed as 4 ft/s. Saturation flow rates are: Left-turning: 1600 veh/hr/ln, Through: 1800 veh/hr/In, and Right-turning: 1700 veh/hr/In 488 488 234- 115 C 1051 217 N 338 -338 Phase I Phase II Phase III 11 AN J|| Narrow_forwardSubject : Transportation Engineering Give me right answerarrow_forwardFor the traffic characteristics and signal phasing system shown below, determine suitable phase lengths for the intersection using the Webster method. For each approach, assume one dedicated left-turn lane, one through lane, and one through-right lane.arrow_forward
- A signalized intersection has two lane groups. The two WBT lanes (lane group #1) have a total volume of 863 pc/h and an average control delay of 24.5 seconds. The one WBL lane (lane group #2) has a volume of 203 pc/h and an average control delay of 36.5 seconds. What is the approach's LOS? Group of answer choices LOS A LOS D LOS C LOS Barrow_forwardTask 3: The Intersection design a. Describe the various principles involved in the design of at-grade intersections and the different types of at-grade intersections. Also, give an example of an appropriate location for the use of each type. b. Design 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 for the geometric and traffic characteristics shown in table 6 below. And the saturation flow of the intersection is shown in table 7 Discuss the effect of increasing saturation flow rates by 10% higher on the cycle length? Table 6:The geometric and traffic characteristics of the intersection Approach (Width) North (56m) South (56 m) East (68m) West (68m) Peak hour approach volumes Left turn 133 73 168 134 Through movement 420 373 563 516 Right turn 140 135 169 178 Conflicting pedestrian volumes 900 1200 1200 900 PHF 0.95 0.95 0.95 0.95…arrow_forwardA 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. 80arrow_forward
- Two adjacent signalized intersections along a major arterial are 650 ft apart (stop line to stop line distance). If the space mean speed between these two intersections is 22 mph, what should be the signal offset of the downstream intersection relative to the upstream intersection? Group of answer choices 20.0 sec 13.5 sec 40.0 sec 29.5 secarrow_forwardselect all correct options.arrow_forward10. For the intersection shown below draw a 3-phase traffic signal operation.arrow_forward
- Nonearrow_forwardExercise 6 A three phase signal design is given below. ● ● ● Hic Signal What is the sum of the flow ratios for the critical lane groups? What is the total lost time for a signal cycle assuming 2 seconds of clearance lost time and 2 seconds of startup lost time per phase? What is the cycle length using Webster Method? EB - Phase 1 2 3 -200 20 SB 30 100- Lane group SB NB EB WB 400 1000 NB 150 50 300 30 WB Saturation Flows 3400 veh/hr 3400 veh/hr 1400 veh/hr 1400 veh/hrarrow_forwardAn signalized intersection located in Baghdad Capital with four phases, if EYi=0.77, lost time for each phase (Lt = 3.0 sec. ).The cycle length for this signalized intersection is equal: * 100 sec. 110 sec. O 107 min. O 41 sec. O 105 sec.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Traffic and Highway EngineeringCivil EngineeringISBN:9781305156241Author:Garber, Nicholas J.Publisher:Cengage Learning
Traffic and Highway Engineering
Civil Engineering
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Cengage Learning