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An early two-light traffic signal by White Horse Tavern in Hudson Street, New York, 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.
This is an accepted version of this page This is the latest accepted revision, reviewed on 19 February 2025. Signaling device to control competing flows of traffic This article is about lights used for signalling. For other uses, see Traffic light (disambiguation). "Stoplight" redirects here. For other uses, see Stoplight (disambiguation). An LED 50- watt traffic light in Portsmouth, United ...
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]
.asx, an XML style playlist containing more information about the items on the playlist [11].fpl, is a format used by foobar2000..kpl, Kalliope PlayList, is a kind of XML playlist storing developed to speed up loading and managing playlists..m3u/.m3u8, a simple text-based list of the locations of the items, with each item on a new line. This is ...
A cartridge format for embedding and easy handling usual 3-inch-tape-reels with 1 ⁄ 4 inch tape, compatible to reel-to-reel audio recording in 3 + 3 ⁄ 4 ips. 1965 8-Track (Stereo-8) The inside of an 8-track cartridge Analog, 1 ⁄ 4 inch wide tape, 3 + 3 ⁄ 4 in/s, endless-loop cartridge DC-International cassette system
A 4-way stop in San Francisco. An all-way stop – also known as a four-way stop (or three-way stop etc. as appropriate) – is a traffic management system which requires vehicles on all the approaches to a road intersection to stop at the intersection before proceeding through it.
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There were red-light and green-light timers, but the latter was taken down due to accidents induced by encouraging drivers to speed up as the green-light timers ended. As for red-light timers, they cannot only inform the time remaining for waiting but also make the drivers focus on their signal instead of the green light in the other direction.