Warning dome device and manufacture method thereof

A method, comprising:

• etching at least one of a plurality of first patterns and a plurality of second patterns distributed over an open-face mold;
• receiving a liquid mixture through the mesh layer into the open-face mold that accumulates within the plurality of first patterns and the plurality of second patterns;
• laying a mesh layer on the open-face mold;
• and
• allowing the liquid mixture to solidify to form a warning mat after the plurality of first patterns and the plurality of second patterns are etched.

A warning system, comprising:

• a warning mat, comprising:
• a base,
• a plurality of first patterns extending away from the base with respect to a direction, and
• a plurality of second patterns, each of the plurality of second patterns disposed between at least four of the plurality of first patterns;
• and
• a mesh disposed within at least a portion of the base to increase flexibility of the base.