What is required after an engine failure in terms of brake application?

Answer: C — One normal brake application with less than 60% pedal travel

In the event of an engine failure, it's crucial to manage the vehicle’s speed effectively, especially in a school bus where passenger safety is paramount. The requirement for one normal brake application with less than 60% pedal travel ensures that the vehicle can decelerate smoothly and safely without making abrupt or harsh braking maneuvers that could cause a loss of control. Utilizing less than 60% pedal travel during the brake application allows the driver to maintain better control over the bus while also preparing for the dynamics of a potential engine stall. This is important because if the engine fails, the power-assisted brakes may not function at full capacity, making it essential to apply the brakes in a manner that compensates for this lack of assistance. In contrast, not applying the brakes at all would pose a significant risk to the safety of the passengers and other road users. Applying two normal brake applications might not be necessary or effective in resolving the situation quickly. Lastly, without any specified pedal travel, the option lacks the necessary guideline for maintaining control during the emergency maneuver. This structured approach to braking following an engine failure is critical for ensuring safety and preventing accidents.