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Abstract Visually challenged people require visual contrasts between targets and backgrounds. The authors performed a laboratory experiment to gauge the visibility of lines under 100 and 1000 lx illuminance conditions. These lines provide an essential reference point for the visually challenged when walking. In this paper, we test their visibility, based on the contrast of lines and backgrounds, in chromatic and achromatic color combinations. A total of 43 colors were used for the target lines, and three achromatic colors were used for the backgrounds. Therefore, a total of 129 color combinations were used. Data from this experiment may assist in the design of walking lines on pavement surfaces, which can provide directions, warnings and other useful guidance to visually challenged people. |
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