Patent ID: 6960989

Claim:
A detectable warning method, for providing a tactile warning upon a pavement surface, using a mold having a top surface and a plurality of dome creation cavities extending downwardly from the top surface, the dome creation cavities spaced apart from each other in a grid, comprising the steps of: covering the top surface of the mold with a first sheet of thermoplastic material; coating the top surface and the mold and the dome creation cavities with a conforming continuous top layer of thermoplastic material by applying heat to the first sheet of thermoplastic material; creating a plurality of detectable warning domes by filling the dome creation cavities with a heat resistant material; creating a detectable warning carrier assembly by coating the detectable warning domes and top layer with a base layer of thermoplastic by fully covering the base layer and detectable warning domes with a second sheet of thermoplastic material and applying heat to the second sheet of thermoplastic material; and applying the base layer to the pavement surface.