Adjustment of Map Colors for Users With Color Vision Deficiencies

Within cartography color is used "to lable (colour as noun), to measure (color as quantity), to represent or imitate reality (color as representation), and to enliven or decorate (color as beauty)." (Tufte 1990, p. 81)

Especially in a context where big parts of information are represented by means of color, such as in choropleth maps or roadmaps it is important that the content is legible and accessible also for people with color vision deficiencies. However in practice a lot of map makers still use color schemes that consist of e.g. red and green and are not legible for 4% of the people (8% of men). Therefore our research aims at the improvement of color schemes representing the noise pressure level in noise maps and the street class color scheme of the "standard" map style.

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