Q: Do you know the backstory of the thin yellow border you see around many stoplights? It’s amazing how such a small border can make the stoplight pop out visually from the background. Whoever came up ...

If you're comfortable with the present green, amber, and red traffic lights, be prepared to get uncomfortable. New research suggests that adding a white light will speed up traffic and improve safety ...

Researchers at North Carolina State University (NC State) are advocating for a significant change in traffic management by proposing the addition of a fourth color to traffic lights: white. This new ...

Many cities are replacing their incandescent traffic lights with LEDs, despite the higher initial cost. Here's why that's ...