How many hazard pre-warning devices must you carry in the vehicle as a mandatory requirement?

A)Three.
B)One.Correct
C)It is not mandatory to carry any.
Passenger cars, mixed-use vehicles and motor vehicles intended for the transport of goods with a MAM not exceeding 3,500 kg must carry the following accessories, spare parts and tools:
- An approved high-visibility vest.
- A hazard pre-warning device, an automatic yellow-coloured device with geolocation and autonomous power supply (battery), to be placed at the highest possible point of the immobilized vehicle to ensure maximum visibility.
- A complete spare wheel, or a temporary use one, with all the necessary tools to make the change.
- A hazard pre-warning device, an automatic yellow-coloured device with geolocation and autonomous power supply (battery), to be placed at the highest possible point of the immobilized vehicle to ensure maximum visibility.
- A complete spare wheel, or a temporary use one, with all the necessary tools to make the change.