North Carolina DMV Practice Exam

When changing a flat tire, blocking the wheels is essential for safety. This action prevents the vehicle from rolling while you are working on it, especially when using a jack to lift the vehicle. If the vehicle moves unexpectedly, it can lead to serious injury or cause further damage to the vehicle. Blockading the wheels ensures stability and alignment, creating a safe working environment. Starting the jack operation before blocking the wheels could pose a risk if the vehicle were to shift. Deflating the tire further is unnecessary, as it's already flat and does not assist in the change process. Calling for assistance can be a good option in some scenarios, particularly if you feel untrained or unsafe, but it's crucial to first secure the area adequately by blocking the wheels before taking any further action.