US law Federal (United States) Regulations Title 49 CFR — Transportation Chapter I — PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION Part 172 — HAZARDOUS MATERIALS TABLE, SPECIAL PROVISIONS, HAZARDOUS MATERIALS COMMUNICATIONS, EMERGENCY RESPONSE INFORMATION, TRAINING REQUIREMENTS, AND SECURITY PLANS Subpart F — Placarding 172.503 49 C.F.R. § 172.503
Identification number display on placards. Last amended: 2016 Year: 2026 Length: 24 words Official source Cite as 49 C.F.R. § 172.503 (2026)
For procedures and limitations pertaining to the display of identification numbers on placards, see § 172.334.
[Amdt. 172-58, 45 FR 34701, May 22, 1980]
Cross-references to the CFR 172.334. 49 C.F.R. § 172.502 Next 49 C.F.R. § 172.504