HalloBasti

Mostly adding (my cheat-sheet):

Brandschutz mit OSM
- emergency=defibrillator
- emergency=fire_hydrant - Even if fire-fighting vehicles have a hydrant map for their region on board, an OSM hydrant map can help with operations in other areas.
- addr:housenumber=num - to find locations fast. particularly important at long streets and large building complex.
basic needs (and traveling related)
- amenity=drinking_water drinking_water:refill=yes drinking_water:refill:network=Refill Deutschland
- amenity=toilets maybe with drinking_water=yes/no
- amenity=shelter
- amenity=bench - Great to see where you can have the next rest, when you are on a long distance trail.
- leisure=picnic_table
- shop=supermarket or the smaller shop=convenience + opening_hours!
- tourism=hostel/hotel/motel/camp_site see Tourism
- shop=outdoor
- shop=laundry with self_service=yes/no
- amenity=atm cash is needed in some rare cases
Hiking/Biking related tags
https://wiki.openstreetmap.org/wiki/DE:Bicycle/overview_amenities
sport=climbing
Sachen für Segler for map.openseamap.org
- Marina facilities https://wiki.openstreetmap.org/wiki/Seamarks/Small_Craft_Facilities
  - seamark:type=small_craft_facility plus:
  - seamark:small_craft_facility:category=toilets;showers/launderette
- https://wiki.openstreetmap.org/wiki/Seamarks/Anchorages
Car navigation
- Apps like Magic Earth and Mapy.cz show the current speed limit.
  - maxspeed:conditional=30 @ (Mo-Fr 07:00-17:00) - Speed limit in front of school