Because he kept getting into traffic accidents.
Police Officer William L. Potts of Detroit, Michigan, decided to do something about the problem caused by the ever increasing number of automobiles on the streets. What he had in mind was figuring out a way to adapt railroad signals for street use. Potts used red, amber, and green railroad lights and about thirty-seven dollars worth of wire and electrical controls to make the world's first 4-way three color traffic light. It was installed in 1920 on the corner of Woodward and Michigan Avenues in Detroit. Within a year, Detroit had installed a total of fifteen of the new automatic lights. ---- The world's first traffic light was operating in London, England, even before the first car was invented. Installed at a London intersection in 1868, it was a revolving gas-lit lantern with red and green signals. However, on 2 January 1869, the light exploded, injuring the policeman who was operating it. Obviously, a safer, more reliable system was required. In the early 1900s, Garrett Morgan of Cleveland, Ohio, developed the electric automatic traffic light. Originally based on a semaphore-system, it was William Potts (see above information) who developed the traffic lights become the red-amber-green lights they are today.
make their own light. what would make light then? the sun gives off light and it's a star.
A light bulb.
no,it is not source of because if we put light on it then it will make eg.. lcd or led if swich on it make light sun, lighting,rainbow and firework
Only black can make black light, so if you try to add any color of light to black, it will stay black.
to make fraffice light
Garrett Morgan got famous in1909 when he invented the traffic signal and when he got rich
Yes. He got into a car arsh between a horse-drawn carriage.That's when he decided to make the traffic light.( Nov. 20 1923.
The whole world would have a lot of car attedints and would prolly have a lot of traffic
Yes
twenty
his contributions was to make a stoplight
jesus was born
Madam C. J. Walker did not manufacture chemical perms. One of the first people to develop a perm for African Americans was Garrett Morgan, who also invented the gas mask and the traffic light. He founded the G.A. Morgan Hair Refining Company.
because he felt like it
Yes she made a book and a movie
He created the very first gas mask. He invented a manually activated traffic signal. And he successfully patented both inventions, although there is no evidence his signal device was ever put into operation.