3. Traffic Signal Design (15 Points) An intersection has a three-phase signal with the movements allowed in each phase a

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3 Traffic Signal Design 15 Points An Intersection Has A Three Phase Signal With The Movements Allowed In Each Phase A 1 (108.36 KiB) Viewed 38 times

3. Traffic Signal Design (15 Points) An intersection has a three-phase signal with the movements allowed in each phase and corresponding analysis and saturation flow rates shown in the following table. Calculate the optimal cycle length (Webster's method) and corresponding effective green times of each phase. Assume lost time is 4 seconds per phase. Phase 1 2 3 4 Allowed EB L, WB L EB T/R, WB T/R SB L, SB T/R NB L, NB T/R movements Analysis flow rate 245, 230 veh/h 975, 1030 veh/h 225, 235 veh/h 225, 215 veh/h 1700, 1700 Saturation flow rate 1750, 1750 veh/h 3400, 3400 veh/h 1750, 1750 veh/h veh/h