Most road signs are easy to understand, as they're pretty literal. Do Not Enter simply means to stay away from that certain area. Speed Limit 55 tells you that you shouldn't go over 55mph. No Passing ...

From stop signs to traffic lights and even when leaving your neighborhood, yield laws are almost always at play when you're on the road. While on paper, these laws can seem pretty simple, but ...

Drivers throughout the country see -- and most observe -- a yellow triangular sign every day that was invented by a Tulsa policeman. Variations of it have been adopted in other countries. The "yield" ...