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Nowadays, the dome tiles installed on the sidewalk ramp can be dangerous because the raised dot patterns can easily cause wheelchairs to tip over backward when ascending on them. We redesign dome tiles with concave and raised dot patterns. The positions of them are arrayed to constitute paths for wheelchair wheels. Therefore, the concave dot patterns are not obstacles to the wheels of the wheelchair. Meanwhile the visually impaired can detect the concave and raised dot patterns by using walking stick.
National Cheng Kung University