How often does the manual say to check your mirrors while driving?
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A.
About every 10 seconds Correct
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B.
Only when planning a lane change
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C.
Once every minute in traffic
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D.
Only when braking is likely
The answer is "About every 10 seconds"
The manual sets a 10-second cadence for mirror checks, separate from the checks you do before a maneuver. New drivers used to glancing only when planning a lane change reach for choice B because it matches how they were taught to use mirrors in driver's ed, but the rule describes an ongoing background check.
The traps in the wrong answers
B. Only when planning a lane change
Mirror use is continuous under the rule, not tied only to planned maneuvers. This answer pulls from the lane-change checklist drilled in driver's ed and stops there.
C. Once every minute in traffic
A one-minute gap is too long for the rear-awareness the rule describes. This answer reaches for a round interval instead of the shorter cadence the manual names.
D. Only when braking is likely
The rule runs independent of braking, as a steady background check. This answer ties lookout to anticipated stops, missing the continuous habit the rule builds.
This question tests your knowledge of Defensive Driving in North Carolina. Source: North Carolina Driver Handbook, "Defensive Driving - Scanning," p.68..
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