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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.
An efficient system of power brakes for the railroad was invented by?
In 1868 George Westinghouse patented a design on which the modern railroad power braking system in based on. The system uses air to charge tank reservoirs in each car. Full tanks signals a release of brakes, while a drop in pressure signals the brakes to be applied.
Why was railroad invented?
The railroad was invented to move people and goods across land in an efficient manner.
Who invented analog signals?
Me
Where traffic signals invented?
Traffic signals were invented in Cleveland, Ohio, by Garrett Morgan, born in Paris, France.
When were smoke signals invented?
Smoke signals were actually invented in 900 BC. They were first invented in ancient China to protect the Great Wall of China.
Date when railroad was invented?
1987
Who invented traffic signals?
mlk
Who invented flag signals?
jesus
Who is George Stepenson?
The person who invented "the railroad".
Why was the railroad invented?
to improve our transportation system!
When was the railroad car invented?
1879 I think
