Friction: Friction is a contact force when two surfaces interact.
Friction, a force that resists the sliding or rolling of one solid object over another.
EXPLANATION:
Insoles of the shoes, they are treated to make their surface rough so that the frictional force is increased when they are used.
The tyres of the vehicle are also treaded to increase friction and prevent slipping.
For example, tires are treaded to reduce the risk of slipping and increase friction during the rainy or wet road, the same case is true for treaded shoes.