Some things are universal.
During my lifetime, the use of international symbols on signs has become more common in the United States. Think of the circle with a slash overlaying a sign to mean “NO”. Or the stylized figures on many public restroom doors.
This applies to words also. On my vacation, while admiring the interior of a Gothic cathedral, one of the daily masses took place. “Alleluia” is the same in both German and English.
But back to signs. While I may have been a little slow to understand some which I saw on vacation, this one I got right away.