New research shows that AI in cars might warrant a new, four-light traffic signal that is more efficient. Getty Images/iStockphoto Surely this will complicate the game of red light, green light.

While the universal traffic light design that the entire planet currently uses (still) does its job very well, there are experts who believe that this critical component of today’s traffic should be ...

Some of the reasons the traditional colors work include: Red: Highly noticeable and traditionally associated with danger and ...

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 ...

Some traffic lights have yellow borders while others don't. Here's why reflective frames matter and why they aren't on every signal.

Adding a fourth light to traffic signals—in addition to red, green, and yellow—would shorten wait times at street corners for pedestrians, a new study shows. It would also improve traffic flow for ...

Development of self-driving technology seems to have slowed down due to the complexity of navigating human-driven traffic. A new paper from the Institute of Electrical and Electronics Engineers ...

Ah, the yellow light. You know, that signal that is supposed to let you know to slow down as you approach the intersection, but makes you speed up instead? You probably take it for granted, but ...