Here’s what it signals—and why it makes a ton of sense.

The colors of flashing lights are now changing in an emergency or power failure. The NCDOT says traffic signals will now be modified so they will flash red in every direction whenever there is a ...

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 ...

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 ...

Traffic engineers are quietly working on a radical idea: adding a white signal to the familiar red, yellow, and green. Instead of signaling drivers directly, the extra light would tell humans when to ...

There's a reason why traffic lights are designed the way they are, with red on top and green on bottom. This light quite ...