Synchronous Embedded Solar Road Stud G # Item No.: RSAS-2-IN-G Two-way RSAS-1-IN-G One-way Characteristics: Wireless synchronous flash, visible under streetlight,snow plow-proof Key Features: For pedestrian crossing, center line, slip road and other heavy traffic use, Only 6.5 mm above the road surface, 40 tons compression resistance, 500 m visible,