JIS T 9251:2014 Guidelines for older persons and persons with disabilities.Shapes, dimensions and patterns of raised parts of tactile walking surface indicators for persons who are blind or with seeing impairment
2014JIS T 9251:2014 Guidelines for older persons and persons with disabilities.Shapes, dimensions and patterns of raised parts of tactile walking surface indicators for persons who are blind or with seeing impairment
2001JIS T 9251:2001 Dimensions and patterns of raised parts of tactile ground surface indicators for blind persons