Raised Solar Road Marker With 40 Tons Compressive Heavy Duty Solar Stud Lights For Highways C2. Load Bearing: More Than 40 Tons (can be installed in the middle of the road) Warranty: 18 Months. Body material: Aluminium (GB-ADC-12)+PC (Japan Brand) Power supply: USA Brand Flexible High Efficient Solar Panel. Visual distance: > 800m.