Before revision: R Railing Railroad crossing Raised pavement marker or raised reflective marker A road surface marker used on roads, usually made with plastic, ceramic, thermoplastic paint or occasionally metal, and come in a variety of shapes and colors.
After revision: R Railroad crossing Raised pavement marker or raised reflective marker A road surface marker used on roads, usually made with plastic, ceramic, thermoplastic paint or occasionally metal, and come in a variety of shapes and colors.