At reduced visibility the towed vehicle shall have lit:
The position or passing lights. when they are not functioning, the vehicle shall be lit on the side towards the centre of the carriageway in front with the non-dazzling white lamp and on the rear, at least, with one red lamp.
The position or passing lamps. When thay are not functioning, the vehicle shall be lit on the side towards the centre of the carriageway in front with a red flashing light.
The parking lights with the warning luminous device switched on; when parking lights are not functioning it is possible to use the warning luminous device separately.