How will vehicles used for road works and services warn of their presence when carrying out repair works on the roadway?
A)By means of a light device with a rotating blue or red light.
B)By means of a light device with one or several blue lights.
C)By means of a light device with one or several auto-yellow lights.Correct
Vehicles used for road works and services must use amber yellow (auto yellow) lights to warn of their presence when carrying out work on the roadway. These lights can be one or several, and their function is to alert other drivers to the presence of the vehicle and the ongoing work. Blue or red lights are reserved for emergency vehicles (police, ambulances, fire trucks) and cannot be used by works vehicles.