What action should be prioritized if brake failure occurs?

When brake failure occurs, prioritizing the use of the emergency brake is critical. The emergency brake, or parking brake, is designed to help bring the vehicle to a stop in situations where the primary braking system has failed. Applying the emergency brake gradually can help slow down the vehicle without locking up the wheels, which could lead to a loss of control.

In situations of brake failure, it is essential to maintain control of the vehicle while trying to stop it. Using the emergency brake not only helps to slow the vehicle but also allows the driver to better manage their stopping distance and avoid obstacles or other vehicles on the road. When handled properly, the emergency brake can be a lifesaver in an otherwise dangerous situation.

Other methods suggested, such as sounding the horn or increasing speed, can create additional hazards or lose control of the vehicle. Steering straight ahead can be a part of the process to maintain control, but it does not address the immediate need to stop the vehicle effectively.