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Problem 3 (20%) Problem 18-5 in Roess, Prassas, McShane, 5th ed. (edited) For the intersection shown to the right, consider a case in which the E-W arterial has three lanes in each direction and the N-S arterial also has three lanes in each direction. For this case: A. What is the absolute minimum cycle length that could be used? B. What cycle length would be required to provide for a v/c ratio of 0.92 during the worst 15- minutes of the hour if the PHF is 0.98? 1,000 tvu/h h = 2.4 s/veh t₁ = 4.0 s/phase 2-phase signal C = 120 s 2,000 tvu/h Only critical volumes shown All volumes in tvu/h

Problem 3 (20%) Problem 18-5 in Roess, Prassas, McShane, 5th ed. (edited) For the intersection shown to the right, consider a case in which the E-W arterial has three lanes in each direction and the N-S arterial also has three lanes in each direction. For this case: A. What is the absolute minimum cycle length that could be used? B. What cycle length would be required to provide for a v/c ratio of 0.92 during the worst 15- minutes of the hour if the PHF is 0.98? 1,000 tvu/h h = 2.4 s/veh t₁ = 4.0 s/phase 2-phase signal C = 120 s 2,000 tvu/h Only critical volumes shown All volumes in tvu/h

Traffic and Highway Engineering
Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter7: Intersection Design
Section: Chapter Questions
Problem 9P
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Problem 3 (20%) Problem 18-5 in Roess, Prassas, McShane, 5th ed. (edited) For the intersection shown to the right, consider a case in which the E-W arterial has three lanes in each direction and the N-S arterial also has three lanes in each direction. For this case: A. What is the absolute minimum cycle length that could be used? B. What cycle length would be required to provide for a v/c ratio of 0.92 during the worst 15- minutes of the hour if the PHF is 0.98? 1,000 tvu/h h = 2.4 s/veh t₁ = 4.0 s/phase 2-phase signal C = 120 s 2,000 tvu/h Only critical volumes shown All volumes in tvu/h
Transcribed Image Text:Problem 3 (20%) Problem 18-5 in Roess, Prassas, McShane, 5th ed. (edited) For the intersection shown to the right, consider a case in which the E-W arterial has three lanes in each direction and the N-S arterial also has three lanes in each direction. For this case: A. What is the absolute minimum cycle length that could be used? B. What cycle length would be required to provide for a v/c ratio of 0.92 during the worst 15- minutes of the hour if the PHF is 0.98? 1,000 tvu/h h = 2.4 s/veh t₁ = 4.0 s/phase 2-phase signal C = 120 s 2,000 tvu/h Only critical volumes shown All volumes in tvu/h
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