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User Interface versus Color Vision Deficiency
Approximately 1 in 170 women and 1 in 12 men have a decreased ability to see color. Color blindness makes it difficult or impossible for a person to engage in certain occupations; this however had no impact on the success of: Bill Clinton, Keanu Reeves, Mark Zuckerberg, Prins William and many others having similar Color Vision Deficiencies.
The effectiveness of a web-page or application does not always consider that over 200 million people across the globe have a decreased ability to see color differences. The most common form is Deuteranopia (green-blindness). Yet, many cartographers, designers and application developers don't factor this into their work. As an example, people with Deuteranopia detect traffic jams from Google or TomTom websites differently from people with normal sight.
Have a look at the image below:
Drawing and conveying relevant or important information in different ways such as using wider line, shaded, striped or hashed fills is highly appreciated by those people who would otherwise miss the message.
If you wish to test color blindness there are multiple apps or software tools available.
Many people don't know it, but Location Intelligence, Analytics, Infrastructure Management and Georeferencing solutions often force people with blind color deviations, to use a specific app to detect color. Example Color Blind Pal
Highly Automated cars do benefit from using high quality maps, these HD Maps are marked in Red in the image below.
In case you are not one of these 200 million people with one of the most well-known forms of color blindness, here's how those with different conditions perceive the colors you may take for granted:
*Countries marked in red have the HD Map ideally used for highly automated driving.
App developers need to understand their audience, including those with a Color Vision Deficiency.