| 摘要 |
A pavement marker (10) has a base (12) having at least one opening formed therein. A groove (44) is formed in the base (12) substantially adjacent the opening. The pavement (10) marker further includes a cover (14) for covering the opening in the base (12). The cover (14) is formed with at least one energy directing rib (56) configured for nesting with the groove (44) in the base. The cover (14) is ultrasonically welded to the base (12) so that the energy directing rib (56) melts and integrally fuses to portions of the base (12) adjacent the groove (44). |
