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Prince Edward Island · Knowledge Test · Instruction Permit · Highway Safety Division

Prince Edward Island Knowledge Test — Instruction Permit Practice Question

Knowledge test administered by Highway Safety Division for the Instruction Permit licence. 40 questions, 80% to pass.

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Accuracy —
Rules of the Road

To quickly defog your PEI vehicle's windshield on a cold morning:

Show Answer & Explanation
Correct Answer: B. Use the defrost setting with AC on (dries air) and warm gradually as the engine warms up

Rapid temperature changes can crack cold glass; AC removes moisture that causes fog.

Why the other answers are wrong

  • A.Turn heat to maximum immediatelyMax heat immediately can thermal-shock cold glass.
  • C.Open all windowsOpen windows can actually increase frost accumulation with cold humid air.
  • D.Rub the glassRubbing creates smears that worsen visibility.