Abstract: A road marker having a collar for mounting a reflector to the surface of the road. The collar is a generally flat disk, having a pair of diametrically opposed projections. The projections have inner planar surfaces to receive a reflector therebetween and curved outer surfaces to facilitate the passage of tires over the marker. The projections have a width and height greater than that of the reflector to protect the ends of the reflector from abrasion. A recess is provided for mounting the reflector to the collar. A plurality of shallow apertures are formed on the bottom surface for receiving a mounting compound for adhering the collar to the road surface.

Abstract: A snowplowable retro-reflective pavement marker having a reflector mounted between a pair of flanged side ramps and a pair of center ramps. The side ramps have longitudinal flanges extending outwardly from each of the ramps to position the base properly with respect to the road surface. The flanges are tapered to provide a smooth contour for guiding snowplow blades when approaching from the side. The center ramps extend longitudinally on either side of the reflector to guide a snowplow blade when it engages the marker at a steep angle.

Abstract: A snowplowable retro-reflective pavement marker having a reflector mounted between a pair of flanged side ramps and a pair of center ramps. The side ramps have longitudinal flanges extending outwardly from each of the ramps to position the base properly with respect to the road surface. The flanges are tapered to provide a smooth contour for guiding snowplow blades when approaching from the side. The center ramps extend longitudinally on either side of the reflector to guide a snowplow blade when it engages the marker at a steep angle.