The yellow flashing traffic signal that indicates a malfunction at an intersection is turning red, according to the North Carolina Department of Transportation. The change, meant to improve safety, ...

Red and green traffic lights have been around since the 1800s, when British traffic officers used to rotate gas lamps that burned red and green to control the movement of mostly horse-drawn vehicles.

COLUMBUS, Ohio (WCMH) — Several new traffic signals with flashing yellow arrows are being installed in west Columbus — something officials hope will reduce the number of left-turn crashes. Ten new ...

Adding a fourth light to traffic signals -- in addition to red, green and yellow -- would shorten wait times at street corners for pedestrians, as well as improve traffic flow for both autonomous ...