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Delaware Class D Knowledge Practice Test
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Observation, Speed & SpaceStandalone practice
Before moving into an adjacent lane, what check is needed in addition to the mirrors?
Blue car A faces east in the right lane. Silver car B occupies the neighboring left lane beside A’s rear quarter. Both cars face the same direction.
Correct answer: A quick look over your shoulder into the blind spot.
Why
Mirrors leave areas where a nearby vehicle, bicyclist, or motorcycle can disappear from view.
Verified against Delaware Driver Manual · Blind-spot check · p. 118
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