North Carolina Class C Knowledge Test Practice
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Passing target: 80% (24/30)
You drive on a paved, winding secondary road with a marked center line and a posted 55 mph limit. Hills and sharp curves let you see only a short distance ahead. How should you choose your speed?
A approaches a sharp curve on a paved road with a marked center line and a posted 55 mph limit stated in the card. A dashed mark identifies the end of A’s clear view, and a side-view hill detail shows why the road beyond the crest is hidden.
Correct answer: Slow to a speed that lets you stop within the distance you can see
Why
At 55 mph a car needs about 211 feet to stop even in ideal conditions, and a hill crest or a sharp curve can hide the road much closer than that. Secondary roads often have steeper hills, sharper curves and very short sight distances. North Carolina law also bans a speed that is greater than is reasonable and prudent for the conditions, even when you are under the posted limit. Watch for animals that cross these roads too.
Verified against North Carolina Driver Handbook · Adjusting Your Speed to Driving Conditions · p. 55, 65, 56
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