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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 )
cycle_barrier=singleseems the most suitable to me.https://wiki.openstreetmap.org/wiki/Key:cycle_barrier
Hm! Description sounds fitting. But why does it say "single" when there are barriers on both sides in the picture and the schematic illustration?
I reckon single here means, the obstacle is a single line (seen from above). Compare to double and triple illustration where the obstacle is two or three "lines".