Solar Road Stud / Solar Road Marker is a protruding sign. It's self-luminous, energy supply by solar panel and durable Ni-mh battery. Generally used for paving road ,used at night or in the rain and fog weather, and sketched the outline of the road, to improve road safety. Weight capacity at least 30 tons,consistant working time at least 15 days after one time fully charged, with 3 years quality guarrantee and optional …