Why is it important to signal when experiencing engine failure?

Signaling when experiencing engine failure is crucial because it allows other drivers to be aware of your situation and the potential need for you to stop or maneuver safely. By activating your turn signal or hazard lights, you communicate your intentions clearly, enabling surrounding vehicles to adjust their speed and position accordingly. This action can help prevent accidents or collisions, ensuring everyone's safety on the road.

The other choices do not relate directly to the importance of signaling in the context of engine failure. Fuel efficiency, engine cooling, and air circulation are not relevant to the immediate need for communication and safety during such an incident.