What happens when you put the parking brake on whilst the vehicle is in motion?

Engaging the parking brake while a vehicle is in motion can cause significant damage to the braking system and the wheels. The sudden application of the parking brake can lead to skidding, loss of control, and potential accidents. In most vehicles, the parking brake operates on the rear wheels, which can cause them to lock up and create a dangerous situation. It's important to use the parking brake only when the vehicle is stationary.