| 摘要 |
<p>A pavement marker (10) that uses a focused LED (40) and/or tailored cube corner retroreflectors (44) to provide maximum illuminance to an oncoming vehicle. In particular, at closer distances of within about 200 feet (about 60.96 meters) the marker (10) provides substantially greater reflex in comparison to pavement markers using conventional cube corner or biconvex reflective elements; while at greater distances beyond about 200 feet (60.96 meters) from the marker (10), use of a focused LED (40) can provide brighter LED illuminance to the driver of an approaching vehicle than that afforded by conventional markers using a non-focused LED. The focused LED (40) can also increase the distance in which the marker (10) is visible thereby providing drivers earlier warning of road curvature.</p> |
