From Autoblog Uni-signal Traffic light with shapes for the color blind.
The principle seems right, the symbols seem wrong. Red should be an octagon, to align with the stop sign. If we use LEDs we could actually spell out the word “stop” (though this might have trouble in winter). An idea worth playing with.
4 thoughts on “Traffic lights for the color blind”
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David Levinson, Transportist 
Change from a red circle? I’m sorry, Dave. I’m afraid I can’t do that.
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Just lovely! A friend of mine is a colorblind driver – he would love to see these on Ontario roads!
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Or, we could just always put the red light on top…
My uncle is colorblind and he says, “Gray means stop”…
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Yes, the symbol is very wrong.
The triangle looks more like and arrow, implying I can go forward now.
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