A brake system is a crucial component of vehicles that allows them to slow down or stop safely. It typically consists of several parts, including brake pads, rotors, and calipers. When the driver presses the brake pedal, hydraulic fluid is used to apply pressure to the brake pads, which then clamp down on the rotors, creating friction that slows the wheels. There are different types of brake systems, such as disc brakes and drum brakes. Disc brakes are commonly found in modern vehicles due to their efficiency and better heat dissipation. In contrast, drum brakes are often used in older models and some rear wheels, providing reliable stopping power in various conditions.