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Illinois Class D Written Exam Practice
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Observation, Speed & SpaceStandalone practice
A vehicle begins hydroplaning on a rain-covered road. What should the driver do first?
Blue A is on a wet road. An enlarged tire-contact detail shows a water film between the tire and road. The detail has a separate scale.
Correct answer: Ease off the accelerator and avoid sudden steering or braking.
Why
Smoothly reducing power helps the tires regain contact without adding a sudden control input.
Verified against Illinois Rules of the Road, July2026 · Hydroplaning response · p. 88
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