Question: Question 4 ( 6 . 5 points ) Consider the intersection geometry below. For this intersection, lanes with protected throughs have saturation flow of 1

Question 4(6.5 points)
Consider the intersection geometry below. For this intersection, lanes with protected throughs have saturation flow of 1800vehhr, lanes with protected lefts have a saturation flow of 1700vehhr, lanes with shared through and right have saturation flow of 1600vehhr, lanes with shared through, right, and permitted lefts have saturation flow of 1000 and lanes with permitted lefts have saturation flow of 500 veh/hr. Saturation flows for lane groups with more than one lane are the sum of the individual lane saturation flow rates (ignore weighting). The start-up and clearance lost times are both 2 sec. Assume the displayed flow rates have already been adjusted by the PHF.
A) Using a three-phase design (1-N/S Lefts, 2-N/S Through/Right,3-All E/W), complete the table
\table[[Approach,EB,WB,NB,SB],[Lane Group,L/T/R,L,T/R,L,T/R,L,T/R],[\table[[Analysis Flow (v)]],,,,,,,],[\table[[Saturation Flow],[(s)]],,,,,,,],[Flow Ratio (v/s),,,,,,,],[\table[[Critical Lane],[Group?(Y or N)]],,,,,,,]]
B) Based on the Table from part A, calculate the minimum cycle length using a 90% capacity utilization.
C) Using a minimum cycle length of 30 s, find the following for WB T/R lane group only. Effective green (g), Capacity (c), v/c (X), d1, d2(For analysis duration T=0.25 hrs) and LOS.
Question 4 ( 6 . 5 points ) Consider the

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