We’re all familiar with the classic red stop sign — from elementary school lessons on shapes and colors to the guidance of crossing guards and, eventually, driving on our own. But while it’s rare, you ...

Add Yahoo as a preferred source to see more of our stories on Google. If you’re traveling down the highway you’re bound to see a giant blue sign that shows what restaurants are at an upcoming exit.

It's a relatively small sign that can make a big impact when drivers need it most. And because many motorists may not realize it's even there, Tuesday was recognized as the first ever Emergency ...