Your vehicle has broken down and is stopped on the hard shoulder — must you signal it?

Your vehicle has broken down and is stopped on the hard shoulder — must you signal it?
A)No, on the hard shoulder it is not necessary.
B)Yes, only with the hazard pre-warning device.
C)Yes, with the hazard warning signal and the hazard pre-warning device.Correct
Any obstacle created on the road — and a broken-down vehicle is considered an obstacle — must be signalled with the hazard pre-warning device and with the hazard warning signal.

The V-16 hazard pre-warning device is an amber self-powered luminous device, type-approved and with geolocation, that operates on autonomous power (battery or cell). It must be placed on the highest point of the immobilised vehicle, ensuring maximum visibility. Currently, the V-16 is the only legal option for signalling an immobilised vehicle or an obstacle on the road, with pre-warning triangles now obsolete.