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Wisconsin Class D Knowledge Test Practice
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Warning, Construction & Information SignsStandalone practice
On a rural road with many curves, you see this sign: a yellow diamond with a black upward arrow above a small red octagon. What should you do?

Correct answer: Slow down now, because a stop sign is ahead and you must be able to stop for it.
Why
Curves, hills and trees can hide a stop sign until you are close to it. The warning gives you time to slow down smoothly and to warn the drivers behind you with your brake lights. At the stop sign, stop fully and go only when the way is clear.
Verified against Wisconsin Motorists' Handbook · Warning signs · p. 27
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