When performing a merge into traffic, how must the driver mandatorily signal the maneuver?

Question

DentroTest · Accepted Answer

To merge into traffic safely, one must follow the MSM (Mirror, Signal, Manoeuvre) rule. The correct answer is with the corresponding indicator, as any lateral movement or change in trajectory must be warned to other road users well in advance using the turn signal (or arm signals if lights fail) and maintaining it until the maneuver is complete. Brake lights are incorrect as they only indicate slowing down, and the horn is reserved for avoiding accidents or very specific situations, not for routine maneuvers.

When performing a merge into traffic, how must the driver mandatorily signal the maneuver?

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