Green highway signs, also called guide signs, are everywhere, and we pass them by without much thought. But their design has ...

Heck, even a toddler can tell you that stop signs are red. That’s because since the 1950s, red has been the required background color for all government-regulated stop signs in the United States. But ...

Motorists will have to obey stop signs for the foreseeable future on Greensburg’s Main Street after a traffic light blew over ...