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Idaho Class D Knowledge Practice Test
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Weather, Visibility & EmergenciesStandalone practice
At night, how close to an oncoming vehicle must you switch from high beams to low beams?
Correct answer: Within 500 feet
Why
Use a beam that does not project glaring light into the oncoming driver’s eyes when within 500 feet. Select low beams in time, and keep watching the road edge if the other driver’s lights cause glare.
Verified against Idaho Driver’s Handbook, July 2026 · Dim headlights for oncoming traffic · p. 43
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