What speed adjustment does the manual give for driving on ice?
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A.
Reduce speed by more than half
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B.
Stay at half the posted limit
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C.
Reduce speed by ten miles per hour
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D.
Slow to a crawl Correct
The answer is "Slow to a crawl"
Ice calls for slowing to a crawl, a stricter standard than the more-than-half cut used for packed snow. Drivers who remember the packed-snow figure and assume one rule covers all winter surfaces choose A on that generalization.
The traps in the wrong answers
A. Reduce speed by more than half
Half off is the manual's guidance for packed snow; ice calls for the tighter standard of a crawl. This answer applies the packed-snow figure across all winter conditions instead of splitting the two.
B. Stay at half the posted limit
The manual does not fix a percentage-of-limit rule for ice; it prescribes a crawl regardless of the posted number. This answer converts the packed-snow phrase into a fixed fraction of the posted limit.
C. Reduce speed by ten miles per hour
A 10 mph cut is far short of what the manual asks for on ice. This answer applies the modest cut that fits light rain to a surface calling for a near-stop.
This question tests your knowledge of Speed Limits in North Carolina. Source: North Carolina Driver Handbook, "Snow and Ice," p.73..
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