peek at solution solve puzzle
quality: difficulty: solvability: line & color logic only
Puzzle Description Suppressed:Click below to view spoilers
#1: Ga Hendrick (GaHendrick) on Jun 5, 2010
A bit of trivia ... yellow is actually an essential color, especially for those (males) who are red/green colorblind. My brother is, and it is fortunately that the light patterns are universal. He knows the red is on top ... green on the bottom.#2: bugaboo (bugaboo) on Jun 5, 2010
Thanks for the puzzle.
what about the sideways traffic lights#3: Tom O'Connell (sensei69) on Jun 5, 2010
haha
i can live wiff bottom :D#4: Linda Martin (ilovethispuzzle123) on Jun 6, 2010
very good puzzle - good graphic.#5: Susan Duncan (medic25733) on Jun 6, 2010
Nice one Tom#6: Susan Nagy (susannagy54) on Jan 4, 2017
One of my mom's relatives (uncle, cousin?) was color blind. He determined the status of the signal by looking to see which one was brightest.
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