§ 172.503 Identification number display on placards.
PART 172—HAZARDOUS MATERIALS TABLE, SPECIAL PROVISIONS, HAZARDOUS MATERIALS COMMUNICATIONS, EMERGENCY RESPONSE INFORMATION, TRAINING REQUIREMENTS, AND SECURITY PLANS, last amended 2016-08-15
Official text from eCFR.gov, up to date as of 2026-10-22. Checked for changes every day.
For procedures and limitations pertaining to the display of identification numbers on placards, see § 172.334.