I found this kind of cycle barrier in Oldenburg right here:
There are 2-3 similar barriers in the same region.
Problem: there is no design specified in openstreetmap fitting for those. How can this be solved?
(I mean the list below "Types / designs of cycle barriers" here: Cycle barrier in OSM Wiki )
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My guess is that isn't a cycle barrier at all. For me it seems to be a special form of removable or foldable bollard for blocking two track vehicles but allows emergence vehicles to open them.
Thanks. Yeah, i thought about using bollard as description, too. It just also doesn't really fit the description. Bollards are apparently pillar-shaped obstacles only. Cycle barrier seems to fit best. Per definition also "single" seems to fit best here. I am still a bit bothered by the difference of the picture and scheme from what I would understand as "single cycle barrier", namely a single barrier. Maybe there could be two or even three options - two sided (path in the middle), one sided (path left or right) and center ( path left and right).