When you’re driving down the highway, you naturally pay attention to traffic signs. But do you ever think about why they look the way they do or why they’re a certain color? Take the green ones. Green ...

HERE IN HANOVER. THEY’RE CRANKING OUT UP TO 100 SIGNS A DAY, AND THEY LOOK A LOT DIFFERENT NOW THAN THEY USED TO. FROM THE STREET YOU LIVE ON, TO THE HIGHWAY YOU DRIVE TO WORK, AND THE WARNINGS ...