If you’ve been on a U.S. road or highway you have seen them. Chances are you followed their indication without too much thought and got to where you were going. We’re referring to those oh so helpful road signs. But, these control devices, as they are referred to, weren’t always in place. Can you imagine driving in the early days of the automobile without any guidance from these signs? In an effort to figure out how they got their shapes, we dive into their history and the road trip that helped establish the basis for their shapes.