This final rule removes undue regulatory burdens by adopting the provisions of U.S. Department of Transportation (DOT) special permit (SP) 21478 to allow empty intermediate bulk containers (IBCs) that only contain the residue of a hazardous material to be transported without shipping papers, placards, and United Nations (UN) identification (ID) numbers.
Source
https://www.federalregister.gov/documents/2026/08/04/2026-15820/hazardous-materials-adoption-of-department-of-transportation-special-permit-21478Canonical document at the regulator. Always cite this URL — not the Vantage detail page — in compliance evidence.