A hydraulic brake system is a mechanism used in vehicles to slow down or stop by using fluid pressure. When the driver presses the brake pedal, it pushes a piston in the master cylinder, which forces brake fluid through pipes to the brake calipers at the wheels. This fluid pressure activates the brake pads, which clamp down on the brake discs, creating friction to slow the vehicle. This system is favored for its efficiency and reliability. It allows for smoother braking and requires less effort from the driver. Commonly found in cars, trucks, and motorcycles, hydraulic brakes are essential for safe vehicle operation and are often paired with anti-lock braking systems (ABS) for enhanced control.