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

Question: I know you’ve wrote about regulatory and warning type signs before. Can you write about what some of the other signs when it comes to services and guidance? A portion of state statutes were ...

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 ...