# General specifications applicable to multi-unit tank car tanks designed to be removed from car structure for filling and emptying (Classes DOT-106A and 110AW).

**Citation:** 49 CFR 179.300  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated



## Document text



## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-179.300>
- Source ID: `ecfr`
- SHA-256: `dc21be5186bc33915c060b0f5d4721074236b0e8f7d8f1e59cc359ff1dc206fe`
- Retrieved: 2026-08-20T05:46:20.606Z
- Exported: 2026-08-22T10:56:27.582Z
- Document slug: `49-cfr-179-300`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "179",
  "section": "179.300",
  "subpart": "Subpart E—Specifications for Multi-Unit Tank Car Tanks (Classes DOT-106A and 110AW)",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```