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

The concept of the traffic light actually dates all the way back to the 1860s, where gas-lit signals were placed on the posh streets that lined the Houses of Parliament in London. Of course, back then ...

KNOX COUNTY, Tenn. — Traffic signs help guide drivers safely through intersections, neighborhoods and construction zones. But few people stop to consider where those signs come from — or who’s behind ...

The future for autonomous vehicles (AVs) is bright—but only if roadway signage and signals remain visible. AVs require clearly visible infrastructure to navigate roads. A lack of it puts both machines ...