What is the difference between a handbrake and a footbrake?

[NoahMarie]

The differences between a footbrake and a handbrake are: 1. The tires they act on are different: the footbrake applies braking to all four wheels; the handbrake applies braking to the rear wheels only. 2. The principles are different: the footbrake distributes hydraulic fluid from the master cylinder to the brake cylinders at each wheel, which then push the brake pads to rub against the brake discs (or drums), achieving the purpose of deceleration or stopping; the handbrake uses a steel cable connected to the rear brake shoes to apply braking to the vehicle. 3. The braking force differs: the footbrake has greater braking force and includes safety features such as brake force distribution and brake override; the handbrake has smaller braking force and lacks safety features. 4. The usage scenarios are different: the footbrake is generally used for braking or decelerating while the vehicle is in motion; the handbrake is used after the vehicle has stopped to ensure the vehicle does not roll away.