20 Things Turning 100 in 2020
The first tri-color, four-way traffic light was created in 1920.
William Potts, a Detroit police officer, created the first three-color, four-directional traffic signal. Prior to Potts’ invention, the traffic light used only red and green lights.
The yellow light was new at the time and became the standard in all traffic signals by the mid-1930s, according to the The Henry Ford Museum.
Judge Judy, too. Congrats @100??
They say Judge Judy, has spent 100 years on the air. Also, it has been said she is turning 100years old. Both can’t be true. Only one is true !
This is personal but Liberty County in Montana was established in 1920!
i have learned so many things . i really enjoy life in photos. i am amazed at a lot of the photos.