How must a priority vehicle on urgent service, such as an ambulance, warn other road users of its presence?

Question

DentroTest · Accepted Answer

Priority vehicles (police, fire fighting, civil protection and rescue, and healthcare assistance) warn of their presence while on urgent service by simultaneously using the V-1 luminous signal (flashing or rotating blue lights) and the special acoustic signal emitter (siren). According to General Traffic Regulations, this grants them priority over other vehicles. The options mentioning only hazard lights or front indicators are incorrect, as these signals do not identify an urgent service nor do they oblige others to yield.

How must a priority vehicle on urgent service, such as an ambulance, warn other road users of its presence?

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