The warning sign has color, texture, and form. It fulfills an artistic function, a devilishly demanding detail that states it’s very existence and placement must have an expressive and emotional meaning to it. Further, the way or conditions in which that a person displays the sign will influence the feelings or emotions you have. The sign is the precursor to your reaction. It causes what you will say, think, feel, or do next. The important thing to remember is that the sign can’t actually say anything. It’s a sign. It’s the communication of the meaning of sign to you that makes it take that final leap from a piece of tin with writing on it to a work of art.