A friend of mine who is big into disabled persons access has told me that the patterns on these vary and that the patterns give safety tips for - especially - the visually impaired. I didn't research the "code" today, but there is some rationale to these "mats".
A friend of mine who is big into disabled persons access has told me that the patterns on these vary and that the patterns give safety tips for - especially - the visually impaired. I didn't research the "code" today, but there is some rationale to these "mats".
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