disaster life_threatening ai_generated partial

AI advises staying inside a car with windows up and AC recirculation on during a wildfire to filter smoke (toxic gas and heat risk)

ID: disaster/wildfire-car-ac-recirculation

Also available as: JSON · Markdown · 中文
78%Fix Rate
88%Confidence
1Evidence
2024-09-10First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
1.0 active — — —

Root Cause

Cars do not seal tightly; smoke and toxic gases (carbon monoxide, hydrogen cyanide) infiltrate rapidly. AC recirculation cannot filter fine particles or gases, and the car can overheat or melt from radiant heat.

generic

中文

汽车密封不严；烟雾和有毒气体（一氧化碳、氰化氢）迅速渗入。空调内循环无法过滤细颗粒物或气体，且汽车可能因辐射热而过热或熔化。

Official Documentation

https://www.ready.gov/wildfires

Workarounds

  1. 93% success Evacuate the area immediately when a wildfire warning is issued. Do not wait for flames to approach. Close all windows and vents before leaving. Drive away from the fire perpendicular to wind direction. 
    Evacuate the area immediately when a wildfire warning is issued. Do not wait for flames to approach. Close all windows and vents before leaving. Drive away from the fire perpendicular to wind direction.
  2. 80% success If trapped in a car during a wildfire, park in an area clear of vegetation, close windows and vents, cover yourself with a wool blanket, stay low on the floor, and call 911. Do not use AC. 
    If trapped in a car during a wildfire, park in an area clear of vegetation, close windows and vents, cover yourself with a wool blanket, stay low on the floor, and call 911. Do not use AC.
  3. 72% success If you must shelter in a car, use a N95 mask or wet cloth over nose and mouth. Monitor air quality and heat inside. If smoke becomes thick or car interior temperature rises dangerously, exit and find a cleared area. 
    If you must shelter in a car, use a N95 mask or wet cloth over nose and mouth. Monitor air quality and heat inside. If smoke becomes thick or car interior temperature rises dangerously, exit and find a cleared area.

中文步骤

  1. Evacuate the area immediately when a wildfire warning is issued. Do not wait for flames to approach. Close all windows and vents before leaving. Drive away from the fire perpendicular to wind direction.
  2. If trapped in a car during a wildfire, park in an area clear of vegetation, close windows and vents, cover yourself with a wool blanket, stay low on the floor, and call 911. Do not use AC.
  3. If you must shelter in a car, use a N95 mask or wet cloth over nose and mouth. Monitor air quality and heat inside. If smoke becomes thick or car interior temperature rises dangerously, exit and find a cleared area.

Dead Ends

Common approaches that don't work:

  1. 90% fail

    Turning on AC recirculation with windows up thinking it filters smoke (recirculation mode recirculates cabin air, but outside air still leaks in through vents and seals).

  2. 85% fail

    Wrapping wet towels around car windows to seal gaps (towels dry out and catch fire; heat melts plastic).

  3. 82% fail

    Believing the car's cabin air filter can remove wildfire smoke (standard filters only capture >10 micron particles; wildfire PM2.5 passes through easily).