If a law enforcement officer moves an arm up and down alternately, what obligation does this impose on drivers approaching from that side?

Question

DentroTest · Accepted Answer

In accordance with the General Traffic Regulations (Annex I, 1.1.d), when an officer moves an extended arm alternately up and down, it requires drivers approaching the officer from the side corresponding to the arm making the signal to reduce speed. A mandatory and immediate stop is not what this gesture orders: a stop is ordered by raising the arm vertically, or by extending it horizontally for those arriving from directions that cut across that of the arm. Nor does it order a turn toward the side where the arm is moving, because this gesture orders no turn or change of direction.

If a law enforcement officer moves an arm up and down alternately, what obligation does this impose on drivers approaching from that side?

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