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Wisconsin Class D Knowledge Test Practice
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Passing target: 80% (52/65)
Regulatory, Lane & Parking SignsStandalone practice
At a signal-controlled intersection, you want to turn left. Above your lane is this sign: a black arrow that bends left inside a red circle with a red slash. The light is green, and no cars come toward you. What should you do?
Correct answer: Do not turn left here; go straight or turn right, and find another route.
Why
Road authorities prohibit turns where they are dangerous, for example where oncoming traffic is heavy or the view is blocked. The same kind of sign with a right arrow prohibits right turns. Wisconsin law requires drivers to obey official traffic signs unless a traffic officer directs otherwise.
Verified against Wisconsin Motorists' Handbook · Regulatory signs · p. 28
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