Abstract: A pavement marker including a housing having a base for engagement with the surface of a roadway and a reflective wall for reflecting light from vehicles on the roadway when the fore-and-aft axis of the housing is disposed in parallel relationship with the direction of travel of vehicles on the roadway. The central portion of the reflective wall is formed with a plurality of conical reflector elements having relatively high optical efficiency for reflecting incident light rays on the outer surface of the reflective wall that are substantially in a horizontal plane parallel to the plane of the base and that are substantially parallel to the fore-and-aft axis of the housing, but having relatively low optical efficiency for reflecting light rays making a substantial acute angle with respect to the plane of the base or the fore-and-aft axis of the housing. Wide angle reflector elements are formed on side portions of the reflective wall projecting from opposite ends of the central portion.