Unable to answer "What’s the weight limit here?" – on bridge: Alte Heerstraße (Minor/Unclassified Road) – way/33845547 via StreetComplete 63.0:

Unterscheidung von Rad- und Kettenfahrzeugen

Attached photo(s):
https://streetcomplete.app/p/335673.jpg

Unable to answer "What diameter is specified on the sign for this fire hydrant?" – Pillar Fire Hydrant – node/7249639612 via StreetComplete 63.0:

Von der Straße aus nicht ablesbar.

Unable to answer "Who is allowed to use this playground?" – Playground – node/4772753349 via StreetComplete 63.0:

Kein Spielplatz vorhanden