text: Node 30840945 is no exit at all, it is the beginning of the motorway. Node 30840945 is the end of the motorway. While the number is not signposted, it is effectively exit 1 following the signposted exit 2. I have moved the tagging accordingly. 
  
  Regarding the question about "111", this is the ref of another motorway, which can be reached via Saatwinkler Damm when NOT joining the motorway at node 30840945 and instead travelling the tail of Seestr towards the bridge over the motorway.