Which is NOT a function of the parking brake?

The parking brake, also known as the handbrake or emergency brake, serves specific purposes related to vehicle safety and control when parked or in certain driving situations. The primary function of the parking brake is to hold the vehicle stationary, especially on inclines where other brake systems might not be sufficient. When engaged, it prevents the vehicle from rolling away, providing crucial stability until the driver is ready to move the vehicle again.

Additionally, the parking brake can assist in emergency situations by providing an extra layer of stopping power if the primary braking system fails. It is also vital in preventing rollback on slopes, allowing drivers to start moving in a controlled manner without losing traction or control.

Draggin the vehicle forward while driving is not a function of the parking brake; in fact, doing so would be unsafe and could cause damage to the braking system. The parking brake is not designed for active driving use but instead focuses on maintaining a parked position and offering additional safety features. Thus, recognizing these core functions helps clarify the role of the parking brake in vehicle operation and safety.