What should be done in the event of a brake failure?

In the event of a brake failure, applying the emergency brakes immediately is the appropriate response. Emergency brakes are designed to provide additional stopping power when the primary braking system fails. They are typically more reliable and can help slow the vehicle down safely, mitigating the risk of accidents or further complications.

Utilizing emergency brakes can allow the driver to bring the vehicle to a controlled stop, which is critical in maintaining safety for both the passengers and others on the road. This action should always be the first step taken before considering other measures.

The other options would not contribute effectively to improving safety during a brake failure. Ignoring the issue until reaching the destination can lead to dangerous situations, especially if the driver cannot stop the vehicle. Accelerating to compensate for speed loss would only increase the risk of losing control and making it harder to stop the bus altogether. Turning off the engine might disable certain functions but could also result in loss of steering control and power-assisted brakes, which can make the situation even more dangerous. Thus, relying on the emergency brakes is the most prudent course of action to ensure safety.