Jun 10, 2022 · 270 degree solar powered road stud ceramic raised pavement Nov 16, 2006 · The method involves angling the plurality of LEDs in a plurality of directions differing by small angles, e.g., 2-15 degrees, 4-15 degrees, 2-10 degrees, 4-10 degrees, 5-8 degrees, or other degree or degree range specified for the present road markers.