Early traffic lights had only red and green, which unsurprisingly made intersections rather chaotic. Who invented the yellow ...

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, ...

(WHTM/NEXSTAR) – On many traffic signals found throughout the United States, there is a small light that is placed in between or off to the side of the traffic signal lights. Sometimes you see them ...

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.

This is where traffic-light countdown timers help. They are digital displays that show the number of seconds remaining before ...

Get the latest federal technology news delivered to your inbox. A “white light” added to traffic signals could enable self-driving vehicles to help control traffic flow—and let human drivers know what ...

Those blue lights above traffic signals aren’t decorative. Here’s what they’re for and why more cities are installing them. Blue confirmation lights help police spot and enforce red-light violations ...

Late at night, stopped at a traffic light, a driver notices lights on all lanes of travel except their own appear to change ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (WHTM/NEXSTAR) – On many traffic signals ...