What action best reduces ignition risk after a crash?

• A. Disconnecting the battery, turning off the ignition, and avoiding sparks near fuel.
• B. Letting the engine run to cool components.
• C. Igniting a small flame to burn off fuel fumes.
• D. Ignoring fuel exposure and proceeding.

Answer: (A)

The action that best reduces ignition risk after a crash is to remove sources of ignition and limit fuel vapors. Disconnecting the battery cuts electrical power to the vehicle, stopping potential sparks from damaged circuits and the fuel system. Turning off the ignition stops the engine and reduces fuel pump activity and ignition energy, which lowers the chance of vapors igniting. At the same time, avoiding any sparks near fuel and staying away from fuel leaks directly reduces the opportunity for ignition to occur. Letting the engine run would keep the fuel pump and hot components active, increasing ignition risk. Igniting a flame near fuel fumes is obviously dangerous, and ignoring fuel exposure leaves vapors that can ignite. In practice, perform these steps only if it’s safe to do so and call for professional responders.