History Of The Day - First Electric Traffic Light Is Installed (1914)

[TFD]

Prior to 1914, there had been several attempts to create automobile traffic signals similar to those used by railroads, but it was only after a four-way electric signal was installed in Cleveland, Ohio, that the modern traffic light system began to take root. The signal had only two colors, green and red, but the three-color version still in use today was not far off. Besides railroad signals, what earlier application of red and green might have led to the use of these colors in traffic lights? Discuss



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[Shola sholaz]

most of the  inventions in the world today came from the whites.this is very disturbing to me.blacks shld do d same.