тротуарной плитки с тактильной поверхностью

[Nina79]

тактильной поверхностью ?
I find it hard to believe that тротуарной плитки с тактильной поверхностью can be "paving slabs with a touch surface".

Has anyone got any ideas?

Thanks!

[nephew]

tactile paving

[october]

http://www.accesscode.info/external/5_8.htm
The purpose of the tactile surface is to compensate for the absence of a kerb upstand.
The back edge of the tactile surface should be at right angles to the direction of crossing. This may not necessarily be parallel to the kerb. Some visually impaired people use the back edge of the tactile surface to
align themselves correctly in the direction of crossing.