i only know the year, which is 1904
The three-way traffic light was invented by Garrett Morgan in 1923. He patented the design for the T-shaped traffic signal that included a mechanism to control traffic flow at intersections.
Most sources say he invented it around 1922, and applied for a patent in late 1923.
Garrett A. Morgan invented the three-position traffic signal in 1923. This device was an early version of the modern traffic light, which helped regulate traffic flow and increase road safety.
JP Knight invented the traffic light in 1868
In early 1922, inventor Garrett Augustus Morgan designed a cross shaped traffic signal, for which he submitted a patent application on February 27 of that year. The patent was granted on November 20, 1923.
Garrett Morgan
The three-way traffic light was invented by Garrett Morgan in 1923. He patented the design for the T-shaped traffic signal that included a mechanism to control traffic flow at intersections.
Garrett Augustus Morgan was the African American who invented the three way automatic traffic light.
Garrett Morgan
Most sources say he invented it around 1922, and applied for a patent in late 1923.
Garrett A. Morgan invented the three-position traffic signal in 1923. This device was an early version of the modern traffic light, which helped regulate traffic flow and increase road safety.
JP Knight invented the traffic light in 1868
in his house
In early 1922, inventor Garrett Augustus Morgan designed a cross shaped traffic signal, for which he submitted a patent application on February 27 of that year. The patent was granted on November 20, 1923.
Morgan lived in Ohio. He witnessed a collision between a car and a horse and buggy. He invented an automatic traffic controller and sold it for $40,000.
The four-way traffic light, also known as the modern traffic signal, was invented by Garrett Morgan in 1923. Morgan was an African American inventor and entrepreneur who patented his design to help improve road safety and reduce traffic accidents.
Garrett Morgan invented the first electric stop light around 1926