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Iowa Class C Knowledge Test Practice
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Passing target: 20/25 correct (TLA practice target)
Regulatory, Lane & Parking SignsStandalone practice
A white rectangular regulatory sign reads SPEED LIMIT 45. What does the number mean?
Correct answer: Forty-five miles per hour is the maximum speed in ideal conditions.
Why
A posted speed limit sets a legal maximum, while traffic, road, and weather conditions can require a slower speed.
Verified against Iowa Driver's License Manual · Regulatory Signs · p. 8
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