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Illinois Class D Written Exam Practice
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Weather, Visibility & EmergenciesStandalone practice
At night you are following another vehicle 250 feet ahead. Your high beams are on. What should you do?
Correct answer: Dim the headlights to low beam.
Why
Dim high beams when another vehicle is traveling in your direction less than 300 feet ahead. Glare in the other driver’s mirrors can impair vision. The separate distance for a vehicle approaching from the opposite direction is 500 feet.
Verified against Illinois Rules of the Road, July2026 · Dimming high beams while following · p. 90, 95
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