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Maine Class C Permit Practice Test
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Observation, Speed & SpaceStandalone practice
Before changing lanes, why should you look over your shoulder after checking 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: To see a blind spot the mirrors do not show
Why
A brief shoulder check confirms whether the adjacent lane contains a vehicle hidden outside the mirror view.
Verified against Maine Driver License Manual and Motorist Handbook · Mirror blind spots · p. 64
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