Ah sorry, I know the road only coming from the western side and Auchtertstraßen side. There seems indeed the sign missing. Thanks for the quick reply and contacting the administration.

I found the mapillary pics, e.g. https://mapillary.com/map/im/157136886348764

Just out of curiosity: How did you derive the horse=no (I have no clue about horsetagging).

Best regards
Metzor