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Illinois Class D Written Exam Practice
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Vehicle Safety, Documents & TowingStandalone practice
How far away must an ordinary vehicle horn be audible under normal conditions?
Correct answer: At least 200 feet.
Why
The horn must work and be audible under normal conditions from at least 200 feet. Use it when reasonably needed for safety, not to express anger or demand priority. An ordinary vehicle may not use an emergency siren.
Verified against Illinois Rules of the Road, July2026 · Required horn range · p. 95
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