Unable to answer "What’s the speed limit for this street?" – Bärsbacher Weg (Minor/Unclassified Road) – https://osm.org/way/107481541 via StreetComplete 58.2:

Keine Geschwindigkeitsbegrenzung
ABER: max 1,5t

Attached photo(s):
https://westnordost.de/p/241164.jpg