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Illinois Class D Written Exam Practice
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Warning, Construction & Information SignsStandalone practice
What does a diamond-shaped yellow, yellow-green, or orange traffic sign generally communicate?
Correct answer: A hazard or changing condition is on or near the roadway ahead.
Why
Diamond signs warn of conditions ahead so drivers can adjust speed, position, and attention.
Verified against Illinois Rules of the Road, July2026 · Diamond warning-sign family · p. 66, 71
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