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Illinois Class D Written Exam Practice
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Weather, Visibility & EmergenciesStandalone practice
What lighting rule applies when rain requires use of the windshield wipers?
Correct answer: The vehicle's headlights must be on.
Why
Turn on the required headlights when atmospheric conditions require windshield wipers. This includes weather that calls for intermittent use; the duty is not limited to continuous wiping or nighttime. Parking lights alone do not satisfy the requirement.
Verified against Illinois Rules of the Road, July2026 · Headlights with windshield wipers · p. 88, 95
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