On my 1980 300SD, the headlight switch, which is the disc type that activates the headlights and parking lights by being rotated clockwise, there are two additional positions to the left of the off position. One to the left of the off switch turns on the parking lights on the right side of the car only. An additional turn to the left shuts off the right ones and turns on the left parking lights only. Oh, and this only works with the engine off.
Is this a feature used in Europe or other parts of the world? And if so, what is it supposed to signify?