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Civil Engineering PE

Category - Transportation

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Which of the following best describes the purpose of superelevation in transportation design?

Counteract the centripetal acceleration produced by curves
Counteract centrifugal force on curves
Counteract frictional force between tires and pavement
All of the above

Explanation

Answer: A - The purpose of superelevation is to counteract the centripetal acceleration produced by curves. On superelevated highways, the vehicle weight component that is parallel to the pavement surface and side friction between the pavement and tires produces forces that resist centrifugal forces.

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Civil Engineering PE

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Civil Engineering PE

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