Red and green traffic lights have been around since the 1800s, when British traffic officers used to rotate gas lamps that ...

The yellow light didn’t enter the scene until the 1920s. William Potts, who was a police officer in Detroit, is credited with designing the first three- and four-way colored traffic lights.

You must have seen traffic lights while coming and going on the road. It plays an important role in maintaining order on the road and in ensuring the safety of the people. The three colors (Traffic ...

Some traffic lights use a kind of emoticon etched onto the lenses as a means to distinguish the colors. In some places, blue is used as a color, while others use orange as a color for their ...

Smarter vehicles could mean some of the most dramatic changes for the traditional traffic signal since the yellow light was added more than a century ago By JEFF McMURRAY The Associated Press ...

It relies on a single technological trick — an ingenious hack of the traffic ecosystem. When the light changes, it's not red, or yellow, or green. It's white — and white means: "Robots, go!

On this day in 1920, the way people drove was changed forever when a Detroit traffic cop installed a four-way, tri-color traffic signal on Woodward Avenue in Detroit.

Drivers, most drivers, see yellow and they know they have to slow and assess the situation.” The program for the yellow arrow left-hand traffic signal began in 2013 with an installation in Lenox.