LED emergency lights in most countries are red and blue, and some countries use a single color. So what are the reasons for this phenomenon? A correct comparison analysis is helpful for understanding the reasons.
From the optical point of view of the human eye, the two colors of red and blue are actually the most obvious. Because red is a warm color system, this system of LED emergency lights for cars has a good warning effect, while blue is a cool color system, which represents a kind of guard and order. Red and blue are used to better warn pedestrians and facilitate certain actions to be taken next, so these two colors are chosen.
Red and blue LED emergency lights with the alternate change of red and blue colors can bring us a great visual impact.
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