Today I have been trying to discover why red yellow and green are used for traffic lights, what is the significance of these colours? Why are they used and not blue, pink and purple? I guess red could mean danger, ie if you don't stop you or someone else could be in danger, but what's the link between red and danger anyway?
But yeah, whilst researching traffic lights on the web I came across this site which is quite amusing...
http://iusedtobelieve.com/
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2 comments:
Well yeah I know that!! But why does red mean stop and green mean go is what I want to find out!
I don't understand big words like that!! I'm not that clever!
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