| 摘要 |
An improved roadway surface marking tape material of the kind provided with retroreflective elements or other visibility and/or anti-skid improving elements, upwardly protruding over the generally planar upper face of the tape, the new tape being improved by the provision of further protruding components secured to said upper layer, of height over said face, greater than that of such elements, and comprising sloping portions, for raising snowplowing implements passing over the marking, and causing such implement to slide above said elements, without interfering with the same and therefore protecting them against the destructive action of said snowplowing means.
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