Aspectos geométricos da sinalização tátil para locomoção eficiente de pessoas com deficiência visual e demais públicos

Abstract

Considering the significant proportion of people with visual impairments and reduced mobility within the Brazilian population, it is justifiable to establish guidelines to ensure that both groups have their accessibility rights guaranteed. Therefore, this study conducted a literature review and applied content analysis to propose an update to the geometry of tactile signage that can simultaneously guide people with visual impairments while minimizing interference with the accessibility of other individuals and pedestrians. Normative sets and international studies on the mobility of visually impaired individuals were reviewed, highlighting the use of rounded tactile protrusions, with heights less than 5 mm and widths greater than 13.5 mm, as a means to improve tactile signage geometry. These rounded protrusions significantly reduce vibration levels in wheeled devices. Another relevant aspect is the reduction in the number of segments in 40 x 40 cm² square blocks, with three rows of three protrusions each recommended for warning blocks, and three tactile bumps per block suggested for directional blocks