# Class 3 (flammable liquid) materials in tank cars.

**Citation:** 49 CFR 174.304  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

A tank car containing a Class 3 (flammable liquid) material, other than liquid road asphalt or tar, may not be transported by rail unless it is originally consigned or subsequently reconsigned to a party having a private track on which it is to be delivered and unloaded (see § 171.8 of this subchapt

## Document text

A tank car containing a Class 3 (flammable liquid) material, other than liquid road asphalt or tar, may not be transported by rail unless it is originally consigned or subsequently reconsigned to a party having a private track on which it is to be delivered and unloaded (see § 171.8 of this subchapter) or to a party using railroad siding facilities which are equipped for piping the liquid from the tank car to permanent storage tanks of sufficient capacity to receive the entire contents of the car.

[Amdt. 174-26, 41 FR 16092, Apr. 15, 1976, as amended by Amdt. 174-32, 43 FR 48644, Oct. 19, 1978; Amdt. 174-68, 55 FR 52683, Dec. 21, 1990]

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-174.304>
- Source ID: `ecfr`
- SHA-256: `b936074b0fa020c1c7763427de89147ec839a4965988a3fca88507da0ee748d8`
- Retrieved: 2026-08-20T05:46:04.619Z
- Exported: 2026-08-25T05:28:27.418Z
- Document slug: `49-cfr-174-304`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "174",
  "section": "174.304",
  "subpart": "Subpart G—Detailed Requirements for Class 3 (Flammable Liquid) Materials",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```