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.

This is an archived article and the information in the article may be outdated.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. We see traffic lights all the time.

Engineers are exploring a future white phase on U.S. traffic lights, showing how autonomous vehicles could coordinate movement at intersections.

The Vincent J. M. Di Maio Forensic Science Center, which is also known as the Bexar County Medical Examiner's Office, is located on the Northwest Side of San Antonio. As cars and trucks get smarter ...

The first traffic light came into existence in the United States in the early 1900s. Called semaphore traffic lights, they had retractable arms — similar to railroad crossing arms — with the words ...

As cars and trucks get smarter and more connected, the humble lights that have controlled the flow of traffic for more than a century could also be on the cusp of a major transformation. Researchers ...

(WHTM) — We see traffic lights all the time. Sometimes we get green lights, and sometimes we hit all the red lights on our commute to work. But, while sitting at a red light, have you ever wondered ...

This is an archived article and the information in the article may be outdated.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. As cars and trucks get smarter and more ...

This is an archived article and the information in the article may be outdated.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) — We see traffic lights all the time.