Why are all the warning lights in China red and blue?
What is its application principle?
The red and blue warning lights of fire engines at night are three primary colors,and their lights sense is quite eye-catching,which is an international color.From the optical point of view of the human eye, red and blue can stimulate the vision most obviously.Red is the primary color in the warm color system,which has a warning effect,while blue is the primary color in the cold color system,which forms a sharp contrast with red,which can attach people's attention. The alternating red and blue in the warning lights will make it difficult for the human eye to focus and cause psychological discomfort,so as to achieve the warning effect.
The combination of red and blue gives people more warning and makes people stay away.
Generally,warning lights can be provided with various lengths of products according to the types and uses of vehicles.
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