If a moped rider shakes an extended arm up and down with short, rapid oscillations, what maneuver or intention are they signaling?

Question

DentroTest · Accepted Answer

The General Traffic Regulations (Article 109(2)(c)) require warning, whenever possible, of the intention to bring the vehicle to a stop or to slow it down considerably, by repeated use of the brake lights or by moving the arm alternately up and down with short, rapid movements. That is why that gesture indicates stopping the vehicle or reducing speed significantly. It does not indicate a left turn: that lateral movement is signaled with the direction indicator light or with the arm extended horizontally with the palm facing down (Article 109(2)(a)), without the up-and-down movement. Nor does it indicate overtaking: that is a different maneuver and is not signaled with this oscillating gesture.

If a moped rider shakes an extended arm up and down with short, rapid oscillations, what maneuver or intention are they signaling?

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