Hello,

I think this is incorrect, but correct me if I'm wrong. I'm not too familiar with German street signs, but the sign there says its a foot path with a white sign under it "[icon of a bicycle] und Anlieger frei. There are also several OSM bicycle route relations that pass over this path. 

I found an old picture from 2019, linked below. The same sign repeats a little ahead. Can you confirm this is still the case? 
https://i.imgur.com/zCcIzPr.jpg