🛈 Who invented the stop sign
The stop sign, as a traffic control device, has evolved over time, and its invention is not attributed to a single individual. Instead, it has developed through the efforts of various transportation officials, engineers, and organizations involved in traffic safety.
The concept of stop signs dates back to the early days of automobile traffic regulation. The first documented use of a stop sign-like device occurred in Detroit, Michigan, in 1915, where the city installed stop signs with black letters on a white background. However, these early signs were not standardized.
In 1923, the first national standard for stop signs was introduced in the United States by the American Association of State Highway Officials (AASHO), which later became the American Association of State Highway and Transportation Officials (AASHTO). This standardization helped create uniformity in traffic control devices across the country.
The familiar red octagonal stop sign with white lettering became standardized in the United States in 1954 under the Federal Highway Administration's Manual on Uniform Traffic Control Devices (MUTCD). This manual provided guidelines for the design and placement of traffic signs, including stop signs.
So, while the stop sign wasn't invented by a single individual, its development and standardization are the result of collaborative efforts within the field of transportation engineering and traffic safety.
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