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William Potts (May 1883 – 1947) was a Detroit police officer who is credited with inventing the modern, three-lens traffic light in Detroit in 1920. (A gas-powered, two-lens, red/green traffic signal was invented in London in 1868 by John Peake Knight, though after a short test installation, traffic lights were not seen again in the U.K. until 1929.) [1]
An early two-light traffic signal by White Horse Tavern in Hudson Street, New York. Image taken in 1961. Despite the failure of the world's first traffic light in London in 1869, countries all around the world still made traffic lights. By 1880, traffic lights spread all over the world, and it has always been like that, since then.
Charles Adler Jr. (June 20, 1899 – October 23, 1980) was an American inventor and engineer.He is most known for developing devices meant to improve transportation safety, including sonically actuated traffic lights, colorblind road signals, pedestrian push-buttons, and flashing aircraft lights.
The city’s skyline has been outlined since 1959, originally in all-amber lights like luminarias. 60-plus years of holiday lights: How Fort Worth, Texas, became ‘the Christmas City’ Skip to ...
An LED 50-watt traffic light in Portsmouth, United KingdomTraffic lights, traffic signals, or stoplights – also known as robots in South Africa, [1] [2] Zambia, and Namibia – are signaling devices positioned at road intersections, pedestrian crossings, and other locations in order to control the flow of traffic.
By the 1920s traffic congestion had become so serious that the city became the first in the nation to install interconnected traffic lights. [102] Visitors to the city were often astonished at the lack of pedestrian access to shopping venues and the importance of the automobile within the city.
Keller is home to nearly 50,000 people today, but it used to be a much quieter farming community back in the day. Here are some shots of Keller’s people and places from the 1920s to the 1950s ...
His first traffic light, a manually-operated wooden model, was built while he was head of the SLCPD's Traffic Bureau and installed in downtown Salt Lake City in 1912. Though Wire's traffic light was originally viewed with curiosity and disapproval, the public gradually accepted it over time, and by the 1920s Salt Lake City had developed an ...