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Wisconsin Class D Knowledge Test Practice
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You drive in the right lane of a four-lane highway and plan to move left. A few seconds ago, your mirror showed a motorcycle far back in the left lane, closing fast. Now the mirror shows the left lane empty. What should you do?
Correct answer: Look over your left shoulder first, because the motorcycle may be in your blind spot.
Why
Motorcycles are small, so they are easy to miss in a mirror, and they fit in a blind spot. Before you change lanes, signal, check your mirrors, and look over your shoulder on the side that you will move to. Wisconsin law allows a lane change only after you make sure that it is safe for vehicles that come from behind. If a vehicle was closing fast, expect it next to you, not far back.
Verified against Wisconsin Motorists' Handbook · Motorcycles · p. 55, 21
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