Reflective Road Pavement Marker Reflective Solar Aluminum Road Stud. Model: TYNDD1 . Unidirectional Abs Solar Raised Pavement Marker With Shank . solar pavement markers-Solar Road Studs,Road Studs,Solar . The solar road marker is solar powered, easy to install, has a non-breakable polycarbonate clear finish and is designed for maintenance-free operation.