# Hazardous Materials: Adoption of Department of Transportation Special Permit 21379

**Action Urgency Score:** 30/100

| Field | Value |
|---|---|
| Agency | Transportation Department; Pipeline and Hazardous Materials Safety Administration |
| Type | Final rule |
| Action | Final rule. |
| Published | 2026-08-04 |
| Effective | 2026-09-03 |
| Significant | No |
| CFR parts | 49 CFR 171, 49 CFR 173 |
| Summary | This final rule removes undue regulatory burdens by adopting the provisions of U.S. Department of Transportation (DOT) special permit (SP) 21379 to streamline the transportation of refrigerating machines and components containing certain low flammability refrigerant gases. |
| Document number | 2026-15818 |

## Why this score
- Final rule.

Source: Federal Register API (Office of the Federal Register) (https://www.federalregister.gov/documents/2026/08/04/2026-15818/hazardous-materials-adoption-of-department-of-transportation-special-permit-21379). Last refreshed: 2026-11-04T21:40:49.974Z.
Data from the Federal Register API; the published Federal Register document is authoritative. Informational only, not legal advice.