Why, then, are there still so many all-caps road signs? Two reasons: First, the FHWA still requires certain kinds of signage to be written in all caps. These include cardinal directions (north, south, ...

In fact, they may share a meaning. It seems we're not the only ones that chuckle when the number of the beast pops up on road signs. Barnegat, New Jersey can't keep mile marker 66.6 on either its ...