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Nunavut Class 7 Knowledge Test · Question

Nunavut experiences extreme cold. What does a temporary orange sign with 'FROST HEAVES' caution drivers about?

Frost heaves are common in cold climates; this sign warns of uneven and potentially damaging road surfaces caused by the ground freezing and expanding.

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Question: Nunavut experiences extreme cold. What does a temporary orange sign with 'FROST HEAVES' caution drivers about?

Answer options:

  • Frostbite risk if exiting the vehicle
  • Icy road conditions due to freezing rain ✅ Uneven road service caused by freezing and thawing
  • Road closed ahead due to heavy snowfall

Correct answer: Uneven road service caused by freezing and thawing

Explanation: Frost heaves are common in cold climates; this sign warns of uneven and potentially damaging road surfaces caused by the ground freezing and expanding.

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