spotted in an underpass in Dusseldorf near the Tonhalle.

This is what i believe to be an emergency call thingy for people getting attacked in the underpass.
Although all of the original lettering has been painted over. Ok, might also be a taxi call thingy, but why would that be located in an underpass?

there's room for artistic improvement, but the idea is excellent.
Why it has 911 (us emergency number) instead of 110 (german police number) or 112 (german ambulance number) written on it, i don't know. Maybe these graffiti vandals were american. ...or had just seen american films or maybe they were making a subtle allegation to the 9-11 tele pizza conspiracy connection. it's all possible.

Anyway, i was definitely in need of pizza when i walked by, so i pulled the lever down, as indicated.....said i wanted a family sized salami pizza with extra cheese and olives.
The police were slightly irritated. Mumble mumble… hung up.

End of Story.