Hand brakes are the devices in vehicles that are used to apply the brake to prevent the vehicle from moving. These brakes are also known as emergency brakes, and parking brakes. The other synonyms for hand brakes include e-brake, parking brake, handbrake, and emergency brake. The use of these brakes is vital in preventing vehicles from rolling away on steep inclines or in case of failure of the main braking system. Hand brakes are useful in providing added control and are important safety devices in cars. Therefore, it's essential to maintain these brakes by regularly checking their functionality and repairing them if needed.