why are traffic lights red, amber and green?

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why are traffic lights red, amber and green?

2007-07-27 21:02:11 · 4 answers · asked by Anonymous in Cars & Transportation ➔ Other - Cars & Transportation

4 answers

In the 1800's, when the first (gas powered) traffic signal went into service, the colors used by railroads were engaged since there was already some degree of familiarity.

2007-07-27 23:22:16 · answer #1 · answered by ericscribener 7 · 0⤊ 0⤋

These colors are natural warning signs in nature and are used because they are bright and can be noticed easily by the majority of people.

2007-07-27 21:11:22 · answer #2 · answered by ShinyGlove 4 · 0⤊ 0⤋

to control the way people drive cars

2007-07-27 21:05:51 · answer #3 · answered by Kirstei Katastrophe 1 · 0⤊ 0⤋

red=stop, DANGER
amber= cation
green= go
colors make you feel a certain way

2007-07-27 21:05:41 · answer #4 · answered by Azn Street Racer 5 · 0⤊ 0⤋