HISTIO on Instagram: "Germany doesn’t ask you to step back — it commands you. 🇩🇪🚇 On Berlin’s U-Bahn, the pre-departure announcements were redesigned to sound sharper, louder, and unmistakably urgent. Instead of a polite reminder, the system now firmly declares “Zurückbleiben bitte!” meaning “Stand back, please!” The tone is intentional, cutting through station noise to prevent door blocking and delays. It’s a small audio change driven by transport engineering and human behavior — keeping tra