When a traffic officer gives a long blast of the whistle, what order does it convey to drivers?

Question

DentroTest · Accepted Answer

The General Traffic Regulations (Annex I, section 1.1.e) set two sound signals for officers with the whistle: a series of short, frequent blasts orders vehicles to stop, and one long blast orders them to resume travel. That is why resuming travel is the correct answer. Stopping corresponds to the short, frequent blasts, not to a single long one. Gradually slowing down is not indicated by the whistle either: it is ordered by the arm extended and moved alternately up and down.

When a traffic officer gives a long blast of the whistle, what order does it convey to drivers?

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