Code of Federal Regulations Title 49. Transportation § 49.180.3 General requirements

(1) Identifications that include the letters “DOT”, “MC”, “ICC”, or “UN”;

(2) Special permit, approval, and registration numbers that include the letters “DOT”;

(3) Test dates displayed in association with specification, registration, approval, or exemption markings indicating conformance to a test or retest requirement of this subchapter, an approval issued thereunder, or a special permit issued under subchapter A of this chapter;

(4) Documents indicating conformance to the testing, inspection, maintenance or other continuing qualification requirements of this part;  and

(5) Sales literature, including advertising, indicating that the packaging or container represented therein conforms to requirements contained in subchapter A or C of this chapter.