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The traffic light as we know it today was invented by Garrett Augustus Morgan, the son of former slaves. Before that there was a gas lantern signal light in England, but that was before automobiles. There was a railroad light version later, but it wasn't like our modern version.
If you didn't mean "traffic light" then i don't know.
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∙ 15y ago
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who invented the white light
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Car is to traffic light as train is to?
Railway signal
What are five examples of electromagnetic waves?
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Did a black man invent the traffic light?
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Who invented first traffic signal?
yash
Who invented the digital signal?
george boole
