NOKIN Unidirectional Solar Road Studs Price China are a low-cost, self-contained, solar-rechargeable, LED illuminated marker. LED road stud light can be used to reduce speed, signal driver attention to common features, hazards, and dangerous bends on our roads.Solar LED road stud light are not to be used as a replacement of Retroflective Raised Pavement Markers (RRPM) but as a new high-tech