Here's another sign that doesn't need a translation. Actually, I find that the Japanese are quite paternalistic in some respects and foster a sort of infantilism in adults. For example, train recordings tell you the name of the stop, which side the doors will open, and will remind you not to forget anything on the train at every stop. There are always signs stating the obvious (like the one above). Perhpas, it is consdiered polite to look after the general public this way, but it sends a deeper message that the masses are unable to use common sense to get through the day, and that it is necessary to spell everything out and look after people.