@astra_vulpes yup, stop signs are deemed so important that they're standardized, but not by the EU https://en.wikipedia.org/wiki/Vienna_Convention_on_Road_Signs_and_Signals
@astra_vulpes I'm guessing the text is so you don't have to remember what it means. It's also the only sign that's an octagon specifically because it's so important… dunno how internationally recognized the word "stop" is, it's very similar to the German "stopp"