text: Um, did you actually check on the ground whether this is a roundabout or not? I'm asking because your respective changeset http://osm.org/changeset/50115643 has "Changes based on OSM notes." as the changeset comment.
  
  The reason why I've created a note instead of just editing the road was that I wasn't sure whether it is a roundabout and that on-the-ground checking would have been needed to determine that.