Stop Signs Weren't Always Red-And They Were Almost Yellow
The very first stop signs didn't show up in the United States until 1915. And these stop signs, which were first installed in Detroit, Michigan, were not the red signs you're familiar with today. In 1935, experts in America felt stop signs should be yellow octagons with black or red text. It wasn't until the 1950s when it was decided that all stop signs will be red, citing that people were familiar with red as a message to stop from traffic signals and from warning signs. The argument for yellow was that the pigment would not fade as quickly as the red pigment available at the time would.
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from Brain Stuff
Key Facts In This Video
The first stop signs were white squares with black text. (0:34)
In 1935, experts in the U.S. thought stop signs should be yellow octagons with black or red text. (1:04)