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Colorado Class R Knowledge Practice Test
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Passing target: 80% (24/30)
Regulatory, Lane & Parking SignsStandalone practice
A left-turn arrow is covered by a red circle and diagonal slash. What movement is prohibited?

Correct answer: Turning left at the controlled location.
Why
A red circle and slash mean the pictured movement may not be made while the control is in effect.
Verified against Colorado Driver Handbook · NO LEFT TURN symbol · p. 11
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