text: This https://www.openstreetmap.org/way/30697685 is maxspeed 30 with source of maxspeed as a sign.
  
  This https://www.openstreetmap.org/way/4340940 is maxspeed 50 with source of maxspeed as a sign.
  
  I can't say for sure how this https://www.openstreetmap.org/way/43179368 part is defined atm. I'll come back when I've passed it again on Monday. However I assume it's still 30 as marked by the sign before until it merges with the way down the Rosa-Luxemburg-Straße later (which is 30 also). 