Unable to answer "What type of traffic calming is this?" for https://osm.org/node/30825904 via StreetComplete 45.1:

There is an infrastructure to slow down cars, but it is more like something in between a "dos d'âne" and a round about. Many cars go through without paying attention to it. It is the same for All roundabout on Josephstrasse and Heinrichstrasse

Attached photo(s):
https://westnordost.de/p/106753.jpg