In Finnish driving safety and emergency procedures, why should continuous use of internal air recirculation (sisäkierto) be avoided in winter driving?
Answer and explanation
Correct answer: C. Trapped moisture from breathing fogs and ices vehicle windows
- Step 1: Recirculating air traps human humidity inside the cabin, causing instant severe condensation and frost on the cold glass. Answer: Trapped moisture from breathing fogs and ices vehicle windows. Why not the others: Fresh outside air (even if cold) is drier and demists windows effectively.
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