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Idaho Class D Knowledge Practice Test
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Passing target: 85% (34/40)
Weather, Visibility & EmergenciesStandalone practice
You follow a snowplow that is spreading material and clearing the road. What is the safest choice?
Correct answer: Stay well back; pass only if absolutely necessary
Why
Give snowplows room to work and stay out of blowing snow and thrown material. Do not crowd or pass on the right near a wing blade. Road conditions ahead of the plow may be worse than those behind it.
Verified against Idaho Driver’s Handbook, July 2026 · Snowplow spray and passing · p. 109, 110
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