Braking System: Parking and Emergency Brakes

What typically holds back the parking and emergency brakes during normal operations?

a) Bolts/clamps
b) Centrifugal force
c) Spring pressure
d) Air pressure

Final answer: The parking and emergency brakes are usually held back by spring pressure.

Answer:

The parking and emergency brakes are usually held back by spring pressure.

During normal operations, the parking and emergency brakes of a vehicle are typically held back by spring pressure. This means that the brakes are kept disengaged until the driver activates the parking brake lever or pedal to engage them.

When the parking brake lever or pedal is activated, it applies pressure to the brake shoes or pads. These brake components then press against the drum or disc rotors to prevent the vehicle from rolling. The pressure applied by the springs holds the brakes in place until they are released by the driver.

This system ensures that the parking and emergency brakes are reliable and can effectively hold the vehicle stationary when needed, providing an additional level of safety and security.