Steering mechanism consists of steering system and braking system.
Steering – is the group of components, which allows car to follow the desired course. The main purpose of the steering system is to allow the driver to guide the vehicle.
The steering system converts the rotation of the steering wheel into a swivelling movement of the road wheels in such a way that the steering-wheel rim turns a long way to move the road wheels a short way.
A brake system is a mechanical device that used for slowing or full stopping a moving vehicle, wheel, axle, or to prevent its motion, most often accomplished by means of friction.
Modern cars have hydraulic brakes on all four wheels. There are two main types of brakes: disc brakes or drum brakes.
The front brakes play most part in stopping the car than the rear ones, because braking throws the car weight forward on to the front wheels. Variant of brakes systems with disk brakes at the front and drum brakes at the rear is most popular, because disc brakes are more efficient.