| 摘要 |
<p>A signaling assembly is described and which includes a reflective substrate having opposite first and second surfaces, and wherein each of the surfaces simultaneously reflects visibly discernable electromagnetic radiation and passes electromagnetic radiation, and an emitter for emitting visibly discernable electromagnetic radiation is provided, and wherein the emitted visibly discernable electromagnetic radiation may be simultaneously viewed from location forward of the opposite first and second surfaces.</p> |
