Anna,

I had enough trouble understanding public transport signs written in my native English. For the first few years of riding Melbourne's trams as a schoolboy, I was puzzled by the signs "HAIL CARS HERE" at tram stops. The expression conjured up images of taxis with a sort of bullet-proof roof to guard against our notoriously inclement weather!

The signs advising passengers how to "alight" were a mystery, too, until my vocabularly improved sufficiently.