Jungheinrich is a German company known for forklifts, warehouse trucks and storage systems, and a Verfahrregal is its movable racking for high density storage in a Lager. Instead of fixed aisles, the racks sit on mobile bases and move sideways to open one working aisle at a time. A warning horn or Hupe sounds when the system starts, a safety step also tagged as Horn, Tröte and Logistik by uploaders. Clips of that short start signal now circulate online as a niche industrial sound for edits.