Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 3, Problem 14P
To determine
Horse-power developed by a truck.
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Determine the horsepower developed by a passenger car traveling at a speed of 50-mi/h on an upgrade of 5% with a smooth pavement. The weight of the car is 4,500-lb and the cross-sectional area of the vehicle is 50 square-feet. Repeat this for a 24,000-lb truck with cross-sectional area of 100 square-feet and coefficient of drag of 0.5 traveling at 55-mi/h.
Determine the horsepower produced by a passenger car travelling at a
speed of 68 mi/hr on a radius of curvature of 1,200 ft road of 4% grade
with a smooth pavement. Assume the weight of the car is 4500 lb and the
cross sectional area of the car is 45 ft2.
Determine the speed of a truck when it is hauling a load of 22 tons up a 6% grade on a haul road having a rolling resistance of 80 lb/ton. ( 1 ton = 2,000 lb)
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