PHMSA Empty IBC Hazardous Residue Transport (SP 21478)
Current understanding
To be populated as evidence accumulates.
Evidence log
- 2026-08-04 — Hazardous Materials: Adoption of Department of Transportation Special Permit 21478: PHMSA final rule codifies DOT Special Permit 21478 into the HMR, allowing empty IBCs containing only hazardous-material residue to be transported without shipping papers, placards, or UN identification numbers. (novelty: 2)
Open questions
Related
Contributing findings
Hazardous Materials: Adoption of Department of Transportation Special Permit 21478
04-aug-2026
novelty 2
per-area 2
introduces