Color Blindness and Traffic Lights WisdomCard™

Our Guides and Physician Review team have organized the Top 10 Health Resources on Color Blindness and Traffic Lights and compiled helpful research notes below.

  1. Wikipedia: Design Implications Of Color Blindness | Traffic Light en.wikipedia.org - Traffic Light
  2. BBC: Stop Signs bbc.co.uk - Stop Signs
  3. Parenting and Child Health: What Problems Can It Cause? cyh.com - What Problems Can It Cause?
  4. Toledo-Blend: Life's Minor Frustrations For The Color Blind toledo-bend.com - Life's Minor Frustrations For The Color Blind
  5. Yahoo Answers: How Do The Colour Blind See Traffic Lights? answers.yahoo.com - How Do The Colour Blind See Traffic Lights?
  6. TechNewsWorld: Colorblindness - A Usability Guide For Commercial Applications, Part 1 (Mar. 6, 2007)technewsworld.com - Colorblindness - A Usability Guide For Commercial Applications, Part 1
  7. Halfbakery: Multi Color Traffic Lights halfbakery.com - Multi Color Traffic Lights
  8. Critique Wall: Blindness critiquewall.com - Blindness
  9. ResearchPennState: What Is Colorblindness? rps.psu.edu - What Is Colorblindness?
  10. Color Matters: ESeeing Through The Eyes Of The Color-Blind Shopper: Developing Dialogues For Understanding colormatters.com - ESeeing Through The Eyes Of The Color-Blind Shopper: Developing Dialogues For Understanding


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Research Notes on Color Blindness and Traffic Lights


Color Blindness is the inability to perceive the differences between some of the colors that other people can. Color blindness always pertains to the cone photoreceptors in the retina specifically (red, green and blue), which are capable of detecting the color frequencies of light. One of the implications of color blindness is in identifying the colors in a traffic light. The American traffic light always uses this pattern: The top light is red; the middle, yellow; and the bottom, green. Aside from the color scheme, some traffic signals use universal codes, pictograms, and warning signs to help color blind people.

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