Street Sign and Light Indicator

Still in the topic of bright red color, I noticed a rather interesting things.  Whenever we look at street signs that says 'stop' or 'give way', we see a lot of red paint either in the border or as the background.  And some other signs are in green or yellow or blue.  I think, our eyes are getting used to certain color and their meaning.  For example, when we see green, we feel that it's a calm and friendly colour, much like blue.  Where as in yellow and red, we feel more cautious, alert and be aware of our surroundings.

 
And so I believe, using this same concept, they applied this to everywhere.  Like the lights in car, whenever we turn to the left or light, we turn on the side lighting, which is yellow and giving the indication to the people in front or behind of our car that we are going to turn.  The tail lights are also similar with it.  In conclusion, our mind is now programmed to react or think in some way whenever we see a certain color.  Which made me believe that if we wear or use certain color in our lives, it could affect our ways of thinking.  I'll dig deeper into it on my next posts.