If you experience sudden brake failure while driving, what should you do first?

When you experience sudden brake failure while driving, the first action you should take is to rapidly pump the brake. This technique may build up enough brake pressure to slow down the vehicle, especially if the brake system is only partially failing. Pumping the brake can sometimes restore enough function to allow the driver to stop the vehicle safely.

While other actions are also important in managing the situation, rapidly pumping the brake is a crucial first step in an emergency. It directly addresses the immediate concern of stopping the vehicle. Approaching the situation in this manner helps the driver assess the braking condition without worsening the situation.