If a truck is immobilized on a motorway because of a breakdown or emergency, is it mandatory to signal its presence with the vehicle's lighting?

Question

DentroTest · Accepted Answer

If, because of an accident or breakdown, a vehicle obstructs the roadway, its driver must signal it. Article 130(4) of the General Traffic Regulations says that, without prejudice to switching on the hazard lights if the vehicle has them and, where appropriate, the position and marker lights, the driver must use the regulation hazard warning device, which since 1 January 2026 is the connected V-16 warning light. That is why it is mandatory to signal with the lighting: the hazard lights if the truck has them and, where appropriate (for example, at night or in poor visibility), the position and marker lights. It is not true that using the truck's lights is not mandatory, nor that the hazard lights alone are enough, because the position lighting would be ignored when appropriate.

If a truck is immobilized on a motorway because of a breakdown or emergency, is it mandatory to signal its presence with the vehicle's lighting?

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