Unable to answer "Who is allowed to park here? Parking may be free or paid." for https://osm.org/way/1024931085 via StreetComplete 53.3:

Montag - Freitag von 7:30 bis 16:30 nur für Schulbedienstete.
Ansonsten freier Parkplatz.

Attached photo(s):
https://westnordost.de/p/162351.jpg