# COMBUSTIBLE placard.

- **operation:** document
- **citation:** 49 CFR 172.544
- **title:** COMBUSTIBLE placard.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** (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
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- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-172.544
**body:**

(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]
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- **body characters:** 667