Tactile paving is a system of textured ground surface indicators found on stairs and railway station platforms, to assist pedestrians who are vision impaired.

What do truncated domes do?

Truncated domes (AKA detectable warnings, tactile paving, detectable warning surfaces) are ground surface indicators designed to assist and warn pedestrians who are blind or visually impaired. ... Truncated domes were first developed by the Japanese in the mid 1960's and expanded to Australia and the UK.

Are truncated domes required?

In all applications, truncated domes within detectable warning products are required to align perpendicular or radial to the grade break between the ramp, landing or blended transition and the street. ... Learn more about ADA detectable warnings.