(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 ...

If you're comfortable with the present green, amber, and red traffic lights, be prepared to get uncomfortable. New research suggests that adding a white light will speed up traffic and improve safety ...

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 ...

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.

PENNSYLVANIA (WHTM) — On many traffic signals found throughout the United States and Pennsylvania, there is a small light that is placed in between or off to the side of the traffic signal lights.