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AMDifficulty 3/5

You approach an officer on the side of the arm being moved alternately up and down, travelling perpendicular to that arm. What does the signal indicate?

Correct answer

Reduce speed.

Reduce speed under Annex I, section 1.1.d. The signal does not itself require turning or immediately stopping. The description specifies which approaching drivers are affected; merely being in front without that orientation does not define the case. Do not import the exception for drivers unable to stop safely, which belongs to the vertically raised arm signal. Also obey any clear additional officer instruction.

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  • Stop immediately on the side indicated by the arm.

  • Reduce speed.

  • Turn towards the side indicated by the arm.

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