Why are most road signs red and white in colour?

2008-05-26 2:39 am
5 sentences and English

回答 (1)

2008-05-26 3:02 am
✔ 最佳答案
Easy for read
Red color means warning
The contrast of red and white color is easy to be seen
White color background has better for reflection at night.
White color provide the best background for black color wording or signal.


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