If a driver/operator experiences brake failure, what should they do?

When a driver/operator experiences brake failure, the most effective and safe response is to downshift to a lower gear and use the emergency brake to slow down safely. This method allows the driver to reduce speed gradually while maintaining control of the vehicle. Downshifting engages the engine's braking power, which helps in deceleration without relying solely on the brakes, which are non-functional in this scenario. The emergency brake, which is designed to work independently of the primary braking system, can assist in bringing the vehicle to a complete stop.

The other options are less effective and potentially more dangerous. Accelerating to gain momentum would increase speed, making control of the vehicle more difficult and increasing the risk of an accident. Steering towards the shoulder while stopping is a possible maneuver but does not address the fundamental issue of slowing the vehicle effectively. Simply calling for assistance without taking action to slow down could lead to a hazardous situation on the road, putting the driver and others at risk. Thus, utilizing the emergency brake in conjunction with downshifting is the most prudent course of action in the event of brake failure.