Shilpa’s blog –TRAFFIC LIGHTS & COLOUR PSYCHOLOGY reminded me of a nursery rhyme, my daughter used to sing.
At the crossroads can be seen
Three bright lights
Red, Yellow and Green
Stop! says Red, “There is traffic ahead.”
Yellow says, Wait! “You won’t be late.”
Green says, Go!
Don’t be slow,
it’s safe and clear have no fear.”
( Amazing, I still remember full rhyme.)