If our vehicle becomes immobilised due to a breakdown on a one-way carriageway...

A)We will place two pre-signalling triangles 50 metres from the vehicle and visible from at least 100 metres.
B)We will place a pre-signalling triangle 50 metres in front of the vehicle.
C)We will place the luminous hazard pre-signalling device on the highest possible part of the immobilised vehicle, ensuring its maximum visibility.Correct
The V-16 hazard pre-signalling device is an auto yellow luminous device, type-approved and with geolocation, which operates on autonomous power (battery). It must be placed on the highest part of the immobilised vehicle, ensuring maximum visibility. Currently, the V-16 is the only legal option to signal an immobilised vehicle or an obstacle on the road, with pre-signalling triangles falling into disuse.