Which two hazards require immediate control to prevent a post-crash fire or explosion?

Which two hazards require immediate control to prevent a post-crash fire or explosion?

• A. Wind gusts and sun glare
• B. Fuel leaks/spills and displaced electrical power sources/batteries
• C. Passenger anxiety and car alarm
• D. Oil slick on road from other vehicles

Answer: (B)

Immediately after a crash, the two hazards that require rapid control because they can ignite and cause a post-crash fire or explosion are fuel leaks or spills and damaged or displaced electrical power sources or batteries. Gasoline and other vehicle fuels can vaporize and form flammable clouds that travel along surfaces and pools, so a spark, hot surface, or even a static discharge can ignite them. That makes stopping the fuel source and preventing ignition essential as soon as it’s safe to act. At the same time, damaged electrical power systems—especially batteries or high‑voltage packs—can short, arc, or overheat, producing sparks or heat that can ignite vapors or directly ignite materials around the vehicle. Isolating or disconnecting power sources reduces that risk, with the caveat that high‑voltage systems require trained personnel and proper procedures. In practice, if safe, shut off the ignition and fuel supply, avoid creating sparks, contain any spills, and keep bystanders away while emergency responders manage the scene. Other hazards like wind, glare, or anxiety exist, but they don’t pose the immediate, reliable ignition risk these two hazards do.

Immediately after a crash, the two hazards that require rapid control because they can ignite and cause a post-crash fire or explosion are fuel leaks or spills and damaged or displaced electrical power sources or batteries. Gasoline and other vehicle fuels can vaporize and form flammable clouds that travel along surfaces and pools, so a spark, hot surface, or even a static discharge can ignite them. That makes stopping the fuel source and preventing ignition essential as soon as it’s safe to act. At the same time, damaged electrical power systems—especially batteries or high‑voltage packs—can short, arc, or overheat, producing sparks or heat that can ignite vapors or directly ignite materials around the vehicle. Isolating or disconnecting power sources reduces that risk, with the caveat that high‑voltage systems require trained personnel and proper procedures. In practice, if safe, shut off the ignition and fuel supply, avoid creating sparks, contain any spills, and keep bystanders away while emergency responders manage the scene. Other hazards like wind, glare, or anxiety exist, but they don’t pose the immediate, reliable ignition risk these two hazards do.