A hydraulic brake is a type of braking system that uses fluid to transfer force from the brake pedal to the brake components. When the driver presses the brake pedal, hydraulic fluid is pushed through pipes to the brake calipers, which then clamp down on the brake discs, slowing down or stopping the vehicle. This system is commonly used in cars and motorcycles for its efficiency and reliability. The main components of a hydraulic brake system include the brake pedal, master cylinder, brake lines, and brake calipers. The master cylinder converts the force from the pedal into hydraulic pressure, while the brake lines carry the fluid to the calipers. This design allows for smooth and effective braking, making it a popular choice in modern vehicles.