Question

why are curved roads banked ? ​

Answer 1

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To avoid the risk of skidding as well as to reduce the wear and tear of the car tyres, the road surface at a bend is tilted inward, i.e., the outer side of the road is raised above its inner side. This is called banking of road.

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Answer 2

Explanation:

If the road is level (or horizontal road), the necessary centripetal force is the force of static friction between the car tyres and the road surface. ... Thus, every car can be safely driven on such a banked curve at certain optimum speed, without depending on friction. Hence, a road should be properly banked at a bend.

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