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.

Add Yahoo as a preferred source to see more of our stories on Google. MOBILE, Ala. (WKRG) — The City of Mobile is moving forward with the next phase of its multi-year traffic light project, this time ...

Some things are so ubiquitous that it's easy to forget they're designed for a reason. With more than 300,000 traffic lights set up across the United States, it's easy to take how they look for granted ...

There's a new pedestrian crossing signal in town. Rather than relying on long-standing laws requiring motorists to stop for pedestrians in a crosswalk, the Pedestrian Hybrid Beacon uses yellow and red ...

If you are in your car, driving through an intersection with traffic lights, you're accustomed to looking for a few types of signals — usually green, yellow, and red lights or turn arrows. These ...

LED signal lights generally carry a price tag several times higher than incandescent traffic signal bulbs. However, that hasn't stopped many cities from replacing their incandescent lights with LED ...