Features of Solar Road Stud/Solar LED Aluminum Road Stud. 1) Suitable for edge line of road and pavement. 2) Can use over 180hrs in the foggy or rainy day after fully charged. 3) Can work more than 3 years normally. 4) Energy saving and environmental protection. 5) Fix firmly the product by epoxy resin glue or screws. 6) It can load-bearing 30 tons