why do we use red colour as a sign of danger like we used in traffic light and use red cloth to for help
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Red colour has more intensity. due to which it can be seen from a long distance.
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IT IS A BRIGHT COLOUR AS COMPARED TO OTHER COLOUR. IT CAN BE SEEN. THEREFORE IN AMBULANCE ALSO WRITTEN WITH RED COLOUR SO FRONT DRIVER CAN EASILY SEE THE BACK FROM THE MIRROR..
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