A Fun and Fascinating Fact: Traffic Lights

A large part of my job as a wealth manager is to read. I probably read eight to ten hours per day, picking up a wide variety of information along the way. I’ve decided to post some that I think you’ll find fascinating or fun. Here’s the first:

Traffic lights are thought of as red, yellow, and green.  Many aren’t.  Red lights are actually a mix of red and orange lights while green lights contain blue lights, too.  Why?  To allow red/green colorblind drivers the ability to distinguish between the two. Source: http://nowiknow.com/television-dreams/

With love,



About russtowne

My wife and I have been married since 1979. We have 3 adult children and 5 grandchildren. I manage a wealth management firm that I founded in 2003. My Beloved is a Special Education teacher for Kindergartners and First Graders. I'm a published author of approximately 60 books in a variety of genres for grownups and children. In addition to my family, friends, investing, and writing, my passions include reading, watching classic movies, experiencing waves crashing on rocky shores, hiking in ancient redwood forests, and the beauty of kindness and nature.
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4 Responses to A Fun and Fascinating Fact: Traffic Lights

  1. ksbeth says:

    i had absolutely no idea, but it makes perfect sense )

    • russtowne says:

      I’d wondered why, with so many color-blind people, traffic safety engineers stayed with red and green. Now I know how they were able to do it while aiding those who who might not see regular red or green.

  2. I didn’t know that, how fascinating

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