Question 1: (Answer two branches) (20 Marks) A) In a signalized intersection with three legs, the north phase has two movements: left turn movement with the one-lane approach and through movement. Evaluate the saturation flow rate of each movement. If the environmental condition is bad, and the continuous uphill gradient is 1%. The approach width for the through movement is 24 ft. (assuming: no on street parking, no bus stops, and negligent bicycle and pedestrian traffic conflicting). B) Briefly describe the factors that controlled a selection of a transportation project and the role of the highway engineers. Then explain how to translate the project's ability objectives to solve the problem into criteria. C) Two alternatives have been proposed to construct a new road project to improve capacity and safety. The table below explains each alternative's costs: the initial construction costs, annual operating and maintenance costs after the first year, and resurface of road costs. Assume that the annual interest rate is 5%. Determine the present worth for each alternative, then choose the preferred alternative based on the economic criteria. Alternative The initial construction costs $4.000.000 $3,800,000 The annual operating and maintenance costs $3,900 54.100 S850.000 S800,000 The resurface costs (Every five years) (Every four years) Service life (years) 14