Dear Readers: Here’s a column originally published in 2012. Dear Johnnie: A couple of questions I’ve wondered about while driving on road trips — Question 1: You pass a highway sign stating the ...

Traffic signs have to communicate crucial information quickly and simply, to anyone who might be on the road. They use letters and numbers to lay out information in plain language but they also use ...

Red is used exclusively for regulatory road signs prohibiting doing something. So, a stop sign is red because you are ...