Abstract: A road marker is flush with and preferably slightly below the grade of the surface of the road and may be either solar operated, recharging batteries within it so that light emitting diodes which are connected to the battery source may be turned on during darker night conditions to provide illumination along the boundary lines between traveling lanes along the highway. The surface of the delineator, is profiled to provide a central depression or floor with end inclined walls, at least one of which may carry a light retro-reflective media. Light emitting elements that gain their electrical power from a battery source which itself is energized and recharged by a solar collector occupying most of the surface area of a central depression.