Today's busy roadways need signal lights to keep traffic flowing and prevent accidents. Here's what the traffic light symbols ...

Updated: Nov 13, 2022 / 10:05 AM CST (WHTM) — We see traffic lights all the time. Sometimes we sail past green lights, and sometimes we hit every red light on our commute to work.

Called semaphore traffic lights, they had retractable arms — similar to railroad crossing arms — with the words “stop” and “go” on them. They would also have only red and green lights.

Even the traffic lights themselves have improved. They now measure either eight or 12 inches in diameter and must be visible in every lighting condition. The older incandescent bulbs that ...

Researchers are exploring ways to use features in modern cars, such as GPS, to make traffic safer and more efficient. Eventually, the upgrades could do away entirely with the red, yellow and green ...

Even though it seems like those forever red traffic lights happen in the early morning hours or late at night, we’ve all sat at a red light in the middle of the day. We literally experience all ...

Researchers are exploring ways to use features in modern cars, such as GPS, to make traffic safer and more efficient. Eventually, the upgrades could do away entirely with the red, yellow and green ...

Motorists who’ve grown accustomed to traffic lights in central Connecticut that flash either amber or red in the late-night hours should brace for a change over the next couple of years. At more ...

William Potts, who was a police officer in Detroit, is credited with designing the first three- and four-way colored traffic lights. The amber light was introduced during this time.