Traffic signal trivia: Why are there red prohibited lights

Traffic lights use red lights as stop signals, because red light has a much stronger penetrating ability than…

Traffic lights use red lights as stop signals, because red light has a much stronger penetrating ability than green light, which allows drivers to see and react in advance.

Traffic signal trivia: Why are there red prohibited lights
Traffic signal trivia: Why are there red prohibited lights

It turns out that red lights still have such a powerful knowledge!

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