# COMBUSTIBLE placard.

**Citation:** 49 CFR 172.544  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

(a) Except for size and color, the COMBUSTIBLE placard must be as follows:

(b) In addition to complying with § 172.519, the background color on the COMBUSTIBLE placard must be red. The symbol, text, class number and inner border must be white. On a COMBUSTIBLE placard with a white bottom as prescri

## Document text

(a) Except for size and color, the COMBUSTIBLE placard must be as follows:

(b) In addition to complying with § 172.519, the background color on the COMBUSTIBLE placard must be red. The symbol, text, class number and inner border must be white. On a COMBUSTIBLE placard with a white bottom as prescribed by § 172.332(c)(4), the class number must be red or black.

(c) The words “FUEL OIL” may be used in place of the word “COMBUSTIBLE” on a placard that is displayed on a cargo tank or portable tank being used to transport by highway fuel oil that is not classed as a flammable liquid. The words “FUEL OIL” must be white.

[Amdt. 172-123, 56 FR 66262, Dec. 20, 1991]

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-172.544>
- Source ID: `ecfr`
- SHA-256: `d9db1a886892d2d4600b20d8e012a0f39e76ccd6e55ee92ad9b314ba1b848909`
- Retrieved: 2026-08-20T05:45:59.130Z
- Exported: 2026-08-24T11:45:34.122Z
- Document slug: `49-cfr-172-544`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "172",
  "section": "172.544",
  "subpart": "Subpart F—Placarding",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```