Unable to answer "What type of bicycle barrier is this?" – Cycle Barrier – https://osm.org/node/266438956 via StreetComplete 62.1:

Breites Einzelelement, ausserdem viel näher am Weg entlang der Selz

Attached photo(s):
https://streetcomplete.app/p/322086.jpg
https://streetcomplete.app/p/322087.jpg