Computation of the required number of lanes N,for a given level of service a 1/2 mile, 5 percent grade section of a 4-lane freeway is to be widened to improve the LOS to level C.Determine the number of lanes N equal in one direction use following design feature, DDHV = 2000 vph (Weekday %3D commuter traffic) PHF=0.90 Design speed = 70 mph Lane width = 12 ft Lateral obstruction none Traffic composition Truck = 6%, (Typical truck) %3D Buses = 3% RVs = 2% %3D

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The Profession of Transportation

Transportation Engineering or Transport Engineering is the application of innovation and research-based fundamentals to the planning, management, and operations of facilities for any means of transportation for the provision of safety, efficiency, convenience, security, that is economically and environmentally suitable for the motion of people and goods transportation to various places.