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The traffic signal was invented in 1868 in London before the invention of the car. It was a revolving lantern with red and green signals. On Jan. 2, 1869 the light exploded hurting the policeman who was operating it. The next attempt was made by Detroit Police Officer who decided to make a light to control the increasing numbers of cars on the road. In 1920 he used a red, amber, and green railroad lights and 37.00 of wire to make the first 4 way light. Within a year Detroit had 15 lights controlling traffic. There is no mention of ethnicity of the inventors.
What else can I help you with?
Did the black inventor Garrett Morgan invent the sewing machine?
yes Garrett a morgon did invent the sewing machine
What did Aussie Dr David Warren invent?
the black box flight recorder
Do black people invent?
Yes, there are many black inventors of the past and present. However, black people frequently get less credit for their inventions, and are often overshadowed by a white counterpart, or they are nearly wiped from history altogether with little knowledge around of what they've accomplished. Much of this is still so even in present times. Please see related links below.
Did a black man invent the toilet seat?
The toilet seat has been around so long no one can claim to be the original inventor. However, a black man, Johnny Henry of Laurel, Mississippi recently patented a vibrating toilet seat.
Who was the first Black person to invent Technology?
No single person black, white, yellow or green invents technology. Technology is a body of knowledge added to by individuals and groups. Sometime it is known who added a part of that knowledge and when they did so. At other times is is not known, especially very early additions.
Did white people invent black people?
No
Was J P Knight a black man?
No. He was British and white. He invented a form of the traffic light which resembled the railroad signals where he worked.
Did a black man invent the traffic light?
A police office named William Potts of Detroit Michigan in 1920 invented the traffic signal. His race is not mentioned.
What are all of the products that madam c.j walker invent what else did madam c.j walker invent?
she invented hair products for black people
Do white people invent everything?
No, George Washington Carver invented lots of uses of the peanut and he was African American. Black people invent most everything because they are talented!
Did black people invent rock n roll?
it was originated from blues so yes "we" did.
What did Egypt people invent?
they invented paprus ,black ink,a writing system, and beer
How do blackfoot people communicate?
the black foot people spoke in either algonquin or there native black foot languageLanguage, drums, and smoke signals.
Did a black man invent the revolver?
no
Did a black woman invent a car?
No
Did black people invent cornbread?
No. Early Native Americans did. What you ask shows a stereo typing and is a form of discrimination.
First black woman to invent the perm for woman?
Madam CJ Walker was the first black woman to invent the perm for women
