Abstract: Reflective pavement markers held fixedly to a roadway by epoxy or adhesive include reflectors and a body with spaced top and bottom mounting faces, transverse forward and rearward faces, and lateral side faces. A recess formed in the forward and rearward faces of the body may receive and vertically mount a reflector therewithin. The reflectors have vertical outer faces that are orthogonal to the body mounting faces and angled 30°±15° relative to an orthogonal line from a lateral side face such that the marker generally has a parallelepiped shape. An array of openings, which may be closed or open, extend inwardly into the body from the top and bottom faces and have constricted openings to positively lock in the fixing adhesive and prevent the marker from easily lifting from the pavement.