An intersection has a three-phase signal with the movements allowed in each phase and corresponding analysisand saturation flow rates shown in the table below. Assume the lost time is 4 seconds per phase and a criticalintersection v/c of 0.90 is desired.O 15.552 secO 11.462 secO 14.825 secPhaseO 16.065 secAllowed movementsAnalysis flow rateSaturation flow rateUsing v/c equalization ratio, calculate the effective green time for phase 31NB L, SB L330, 365 veh/h1700, 1750 veh/h2NB T/R, SB T/R1125, 1075 veh/h3400, 3300 veh/hEB L, WB L110, 80 veh/h650, 600 veh/h3EB T/R, WB T/R250, 285 veh/h1750, 1800 veh/h

An intersection has a three-phase signal with the movements allowed in each phase and corresponding analysis and saturation flow rates shown in the table below. Assume the lost time is 4 seconds per phase and a critical intersection v/c of 0.90 is desired. O 15.552 sec Phase Allowed movements Analysis flow rate Saturation flow rate O 11.462 sec NBL, SBL 330, 365 dlh 1700, 1750 vvh NBT/R, SBT/R 1125, 1075 vhh 3400, 3300 veh Using v/c equalization ratio, calculate the effective green time for phase 3 EBL, WBL 110, 80 velvh 650, 600 vehh EBTR, WBTR 250, 285 velh 1750, 1800 velv

An intersection has a three-phase signal with the movements allowed in each phase and corresponding analysis and saturation flow rates shown in the table below. Assume the lost time is 4 seconds per phase and a critical intersection v/c of 0.90 is desired. O 15.552 sec Phase Allowed movements Analysis flow rate Saturation flow rate O 11.462 sec NBL, SBL 330, 365 dlh 1700, 1750 vvh NBT/R, SBT/R 1125, 1075 vhh 3400, 3300 veh Using v/c equalization ratio, calculate the effective green time for phase 3 EBL, WBL 110, 80 velvh 650, 600 vehh EBTR, WBTR 250, 285 velh 1750, 1800 velv

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter8: Intersection Control

Section: Chapter Questions

Problem 8P

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An intersection has a three-phase signal with the movements allowed in each phase and corresponding analysis and saturation flow rates shown in the table below. Assume the lost time is 4 seconds per phase and a critical intersection v/c of 0.90 is desired. Phase 3 Allowed movements NB L, SB L NB T/R, SB T/R EB L, WB L ЕВ TR, WB TR Analy sis flow rate 330, 365 veh/h 1125, 1075 veh/h 110, 80 veb/h 250, 285 veh/h Saturation flow rate 1700, 1750 veh/h 3400, 3300 veh/h 650, 600 veh/h 1750, 1800 veh/h Calculate the sum of the flow ratios for the critical lane groups. 0.787 O 0.857 O 0.709 O 0,829
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