| 摘要 |
The upper surface of the marker strip (S) has longitudinally spaced transverse rows of protrusions (1, 1 min , 1 sec , 1''') of trapezoidal vertical cross-section containing exposed retro-reflective beads (3) at least on their inclined lateral surfaces (FF, RF, SF), the protrusions of successive rows being staggered and the spacing of corresponding protrusions of alternate rows being more than twice the longitudinal length of the rectangular flat top surface (T) thereof, said top sussrfaces being longest in the longitudinal direction of the strip. The marker strip comprises a bottom rubber-like non-memory surface and an upper crosslinked elastomeric self-restoring surface. |
