In the case of a towed vehicle, the following must be illuminated in reduced visibility:
The side-marker or dipped-beam headlamps and, in the event of failure of these headlamps, the towing vehicle on the side towards the center of the road must be illuminated at the front by a non-dazzling white light and at the rear by a red light .
Sidelights or dipped-beam headlamps and, in the event of failure of these lights, the vehicle must be illuminated at the front by a red flashing light .
Sidelights together with warning light on ; In the event of a sidelight failure, the warning light can be used separately .