Arkansas Commercial Driver License (CDL) Practice Test

What should you do to keep a fire from spreading in an engine fire?

1. Apply water

2. Keep the fire contained

3. Remove flammable objects

4. Sound the horn

The correct answer is: Apply water

Applying water to an engine fire is often considered a typical response for many types of fire situations, particularly those involving organic materials or combustible solids. However, it is crucial to recognize that this may not be effective—and could be dangerous—in the case of certain fires, particularly those fueled by flammable liquids, electrical components, or grease. The more appropriate action to prevent the spread of an engine fire is to keep the fire contained. This involves quickly attempting to control the fire and preventing it from reaching other flammable materials or areas of the vehicle. Keeping the fire contained may include shutting off the engine, using fire extinguishers, or moving the vehicle to a safe area if possible and practical. Moreover, removing flammable objects from the vicinity of the fire is another essential step. This can significantly reduce the risk of the fire spreading by eliminating potential fuel sources. Sounding the horn does not have any direct effect on the fire's containment or suppression and may only serve as a signal for attention, rather than act as a means to control the situation. Understanding the correct approach to managing an engine fire, including keeping it contained, is critical for ensuring safety and minimizing damage.