Question

A) Willow and Stevens are two-way streets in an urban area. A four-phase operation is used for the intersection of Willow and Stevens with a cycle time of 110 seconds, including 15 sec Green for the left turn (LT) vehicles on each street. If the green time for the through (TH) vehicles on Willow is 30 sec, determine the green time for the through (TH) vehicles on Stevens and construct the signal timing cut-out diagrams for vehicles only without considering pedestrians. Assume a clearance (Yellow 3 sec + All Red 2 sec) time of 5 seconds when the green light is switched between Willow and Stevens (but do not use the clearance time when the signal changes from LT to TH on the same street.

B) The width of Stevens Avenue is 52 feet. How long should be the Flash Don’t Walk (FDW) duration if the walking speed of pedestrians is 4 feet/sec?

Answer 1