SOLAR Powered White LED (Highway Centerline) Marker. $55.95. White fixture, White LED light one side / Red LED light one side – LED lights visible over ½ mile, rated 20 tons PSI, made to withstand extreme weather conditions – Secures to asphalt or concrete with epoxy (4¾” x 4¾” x ¾”) SOLAR Powered White LED (Highway Centerline) Marker quantity.