Brakes are mechanical devices used in vehicles to slow down or stop their motion. They work by creating friction against the wheels, which reduces their speed. There are different types of brakes, including disc brakes and drum brakes, each with its own design and function. When a driver presses the brake pedal, hydraulic fluid is sent to the brake components, activating them. This process allows the vehicle to decelerate safely. Regular maintenance of brakes is essential for ensuring safety and performance, as worn-out brakes can lead to longer stopping distances and increased risk of accidents.