A freeway is being designed for a location in mountainous terrain. The expected free-flow speed is...

A freeway is being designed for a location in mountainous terrain. The expected free-flow speed is 88.5 km/h. Lane widths will be 3.6 m and shoulder widths will be 1.8 m. During the peak hour, it is expected there will be a directional peak- hour volume of 2700 vehicles, 12% large tracks and buses and 6% recreational vehicles. The PHF and driver population adjustment are expected to be 0.88 and 0.90, respectively. If a level of service no worse than D is desired, determine the necessary number of lanes.

Expert Solution

Ally Wells answered 9 months ago

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