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angelica7773
angelica7773
27.04.2021 • 
Mathematics

A six-lane freeway (three lanes in each direction) is located on rolling terrain. The lanes are all 12-ft in width and with an obstruction 5-ft from the right side of the travel lanes. Ramps are spaced such that there is 1 ramp every 2 miles. The free-flow speed was measured to be 70 mph. A weekday directional peak-hour volume of 3,000 vehicles is observed, with 815 arriving in the most congested 15-min period. Approximately 4% of the vehicles are heavy vehicles (trucks, buses and RVs). Estimate the density of traffic to the nearest 10th of a pcpmpl.

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