Banking of roads is defined as the phenomenon in which the edges are raised for the curved roads above the inner edge to provide the necessary centripetal force to the vehicles so that they take a safe turn. In simple terms, the system of raising the outer edge of a curved road above the inner edge is called banking of roads.
The reason why banking of roads reduces wear and tear of the tyresis given below:
The friction between the road and the tyres are very high and causes wear and tear of tyres
The banking of roads is a good way to lessen the wear and tear caused due to friction as the horizontal component of normal reaction gives the necessary centripetal force, hence lessens friction.