Field notes
Articles on tactile walking surface indicators
The purpose behind the surface matters. Start with the distinct pedestrian messages communicated by DWS, TDI, and TWD.
DWS: Why Detectable Warning Surfaces Exist
What truncated domes tell a pedestrian—and why location matters.
TDI: When a Walking Surface Is Meant to Guide
A real four-bar installation shows how a tactile cue can lead to a crossing signal.
TWD: Making a Flush Boundary Detectable
How a tactile boundary can distinguish a pedestrian path from an adjacent travel area.