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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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Chapter 8, Problem 15P
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Solve problem 3 ple
The total cycle time of an intersection is 60 seconds, the green time for the phase is 27 seconds
and the corresponding yellow time is 4 seconds. If the saturation headway is 2.4 seconds/
vehicle, the startup lost time is 2 seconds/phase and the clearance lost time is 1 second/phase
then the capacity of the movement is
(a) 1500 veh/hr/lane
(c) 500 veh/hr/lane
(b) 700 veh/hr/lane
(d) 300 veh/hr/lane
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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- A two-lane minor street crosses a four-lane major street, with traffic conditions of volumes for each eight hours of an average day (both directions on major street) is 450 veh/h and the volume minor-street approach (one direction only) is 96 veh/h. With pedestrian volume of 198 ped/hr during (two hours in the morning and two hours in the afternoon) and the nearest traffic signal is located 250 ft from this location. The intersection is warranted for: Select one: O a.A traffic signal for warrant 4 O b. Not warranted since the nearest intersection is too close O C.A traffic signal for 70% of the condition of warrant 1 O d. Nonearrow_forwardPlease this question Steparrow_forwardA signalized intersection approach has two lanes with no exclusive left- or right-turning lanes. The approach has a 50-second green out of a 90-second cycle. The yellow plus all-red intervals for the phase total 4.0 s. If the start-up lost time is 2.0 s/phase, the clearance lost time is 1.5 s/phase, and the saturation headway is 2.25 s/veh under prevailing conditions, what is thecapacity of the intersection approach.arrow_forward
- select all correct options.arrow_forwardA signalized intersection approach has three lanes with no exclusive left or right turning lanes. The approach has a 40- second green out of a 75-second cycle. The yellow plus all-red intervals for phase total 4.0 seconds. If the start-up lost time is 2.3s/phase, the clearance lost time is 1.1s/phase, and thesaturation headway is 2.48 s/veh under prevailing conditions, a. Calculate the saturation flow rate (veh/hr and whole number) b. Calculate the effective green time (sec and in 1 decimal) c. what is the capacity of the intersection approach? (veh/h/In and 2 decimals)arrow_forward6. 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_forward
- Four-phases signal with a cycle time of 80 sec, Inter Green = 4 sec/phase, lost time / phase = 2 sec. Saturation flow on all approaches are similar, but the maximum traffic flows on two of the phases are triple the maximum traffic flows on the remaining two approaches, what will be actual green time on each phase ?arrow_forward5. 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↓↓ Yrarrow_forwardPlease solve all the problems. Thanksarrow_forward
- 5. Design signal for the intersection shown in Figure 1. Assume no pedestrian activity. Assume amber time as 3s and all-red time as 1s for each phase. 750 820 850 765 335 ➖➖➖➖➖➖➖➖ '250 Lane width = 3m Sat. flow rate: ΤΗ -1,800 pcuphgpl TH, RT-1,650 pcuphgpl TH, LT-1,700 pcuphgpl IL tr Phase A Phase Barrow_forwardThe maximum flow that could pass through an intersection from a given approach, if that approach was allocated all of the cycle time as effective green with no lost time. Saturation flow B) cycle flow Peak flow (D Approach capacityarrow_forwardThree-phase a pretimed signalized system for T- intersection, the total lost time per phase is 15 sec. Given that PHF for intersection is 0.91. The table below shows information for all movements included in each phase. (Assume the intersection is isolated, and the traffic flow accounts for the peak 15-min period, and there is no initial queue at the start of the analysis period.) 1 Phase Direction Lane group Number of Lanes Volume (veh/h) 2 Northbound Southbound Northbound LT TH & RT ΤΗ I I 250 1800 390 1800 1 270 1600 2- Determine the average vehicle delay for each traffic lane. 3- Evaluate the level of service (LOS) for each traffic lane. 3 Westbound LT 1 250 2500 Saturation flow (veh/lane/hr) 1- Using the Webster method, determine the optimum cycle length and the effective green time for each phase.arrow_forward
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