What is the purpose of parking brakes?

The purpose of parking brakes is primarily to hold the vehicle stationary when parked. Parking brakes, also known as hand brakes or emergency brakes, are designed to engage the rear wheels of a vehicle and ensure that it does not roll away when parked, especially on an incline. This function is crucial for safety, preventing accidents that could occur if a vehicle were to move unintentionally.

The design and operation of parking brakes allow them to maintain their grip on the vehicle despite external forces, such as gravity. They operate independently of the vehicle's primary braking system, allowing for reliable performance when the vehicle is not in motion.