You may have noticed some traffic lights with a white light that works independently of the others. They're not for normal ...

You’ve trusted the same three traffic light colors your entire driving life. Red, yellow, green: it’s simple enough… until it isn’t. Behind every signal on U.S. roads sits a thick federal rulebook ...

A “white light” added to traffic signals could enable self-driving vehicles to help control traffic flow—and let human drivers know what’s going on. In computational simulations, the new approach ...