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Idaho Class D Knowledge Practice Test
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Passing target: 85% (34/40)
Vehicle Safety, Documents & TowingStandalone practice
A trailer blocks the view through your normal rear window. What mirror setup is required?
Correct answer: An additional mirror on each side providing the needed rearward view
Why
Fit a mirror on each side so the driver can see the highway at least 200 feet behind. An interior mirror blocked by the trailer does not provide that view. Check and adjust the outside mirrors before towing.
Verified against Idaho Driver’s Handbook, July 2026 · Trailer blocks rear window · p. 40
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