If you’ve seen talk about a white traffic light or images of a signal with an unfamiliar fourth color, you’re not imagining it. With everything drivers already pay attention to at intersections, ...

Researchers at North Carolina State University say a simple change to intersection signals could make daily traffic work better as more autonomous vehicles hit the road. Their idea is to add a white ...

Transportation engineers at North Carolina State University have proposed that an additional color be added to existing traffic lights. This new color would be a white light, intended for the use of ...