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

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 ...

PENNSYLVANIA (WHTM) — We see them every time we are on a highway or road: traffic signs. But did you know that PennDOT categorizes these signs? According to PennDOT, signs are divided into three ...