What should you do if you experience brake failure while driving?

If you experience brake failure while driving, using the parking brake gradually is the most appropriate response. The parking brake can slow down the vehicle without causing it to skid or lose control, as long as you apply it slowly. This approach allows you to reduce your speed steadily and maintain better control of the vehicle during the emergency.

In contrast, steering towards the nearest wall could lead to a collision and increase the risk of injury. Shifting into neutral and attempting to restart the vehicle is not practical or safe, as it does nothing to slow the vehicle down and could complicate the situation. Accelerating to regain control is also not advisable; this would further increase your speed and make it harder to manage the situation safely. Therefore, applying the parking brake in a controlled manner is the best course of action when faced with brake failure.