The Department of Energy’s Office of Nuclear Energy announced last week that the Association of American Railroads has certified its Atlas railcar system to operate on all major freight railroads in the United States.

Watch a video of the Atlas railcar development here.

The Department of Energy’s Office of Nuclear Energy has wrapped up testing of its Atlas railcar, successfully completing a round-trip journey from Pueblo, Colo., to Scoville, Idaho. Built to safety standards set by the Association of American Railroads (AAR), the 12-axle railcar is designed to transport large containers of spent nuclear fuel and high-level radioactive waste.