I see a lot of Trabis like yours that have an extra set of white lights on the front bumper. Are they fog lights (nebel leuchte?) When you are driving at night do you usually drive with both your main headlamps and your fog lights on?

I am asking because I would like to add additional lights to the front and back of my Trabi, both to help me see at night, and to make me more visible to other drivers.