What should you do if you experience brake failure?

In the event of brake failure, pumping the brakes can help build up brake fluid pressure, which might allow for some braking capability. This technique is often effective in situations where the issue is related to air in the brake lines or a temporary loss of pressure. Additionally, using the emergency brake provides an essential backup method to slow the vehicle down or bring it to a stop. It is important to remember to engage the emergency brake slowly and gradually to prevent locking the rear wheels, which could lead to skidding.

The other options may not provide safe or effective solutions. Shifting to a higher gear and accelerating could worsen the situation, as it would increase speed when you need to slow down. Turning off the engine may lead to a loss of power steering, making the car harder to control while coasting, and coasting generally does not allow for effective braking. Ignoring the problem and continuing to drive poses not only a risk to the driver but also to other road users, which is why it's critical to take appropriate and immediate action when brake failure is encountered.