2. (15 pts) An intersection has a four-phase signal with the movements allowed in each phase and the corresponding analysis and saturation flow rates shown in the table below. Please complete the following: a. Calculate the sum of flow ratios for the critical lane groups. b. Calculate the minimum cycle length and effective green time for each phase (balancing v/c ratio for each lane group). Assume the lost time is 4 sec/phase and a critical intersection v/c ratio of 0.95 is desired. c. Calculate the optimal cycle length and corresponding effective green times (based on lane group v/c equalization). Assume lost time is 4 seconds per phase Phase 1 2 3 4 Allowed Movements EB L, WB L EB T/R. WB T/R SB L, SB T/R NB L, NB T/R Analysis Flow Rate 245, 230 975, 1030 Sat Flow Rate 1750, 1725 3350, 3400 255, 235 1725, 1750 225, 215 1700, 1750