What is the main reason roads are tilted on curves, helping cars stay stable?

The main reason roads are tilted on curves, a design practice known as banking, is to provide the necessary centripetal force that keeps a car moving in a circular path and prevents it from skidding outwards. When a car travels around a curve, its inertia, which is the tendency of an object to resist changes in its state of motion, makes it want to continue moving in a straight line. To force the car to follow the curved path, a net force must act upon it, pointing towards the center of the curve; this required force is....