Why is yellow colour light is used in traffic signal brainly?
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Because scientifically it is one of those colours which are intense to Human Eye Thus they are used in traffic light so that they are also eye Catching as well like Red and Orange.
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They chose red as the color for stop, it is thought, because red has for centuries been used to indicate danger. ... Thus, the railroad decided to change it so the green light meant go and a caution “yellow” was chosen, primarily because the color is so distinct from the other two colors used
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