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North Dakota Class D Knowledge Practice Test
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Passing target: 80% (24/30)
Warning, Construction & Information SignsStandalone practice
Light rain has just begun after several dry days. You pass a yellow diamond sign that shows a black car above two wavy tire marks. What is the best response?
Correct answer: Slow down now, since the first rain can make the road very slick
Why
Deeper water can also cause hydroplaning, when the tires ride on water instead of the road. N.D.C.C. 39-09-01 requires a speed that is reasonable for weather and road conditions, even below the posted limit. Increase your following distance too, because you need more room to stop on a wet road.
Verified against 2025-2027 Class D Noncommercial Driver License Manual · Warning signs · p. 16, 33
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