{"operation":"document","citation":"49 CFR 172.527","title":"Background requirements for certain placards.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"(a) Except for size and color, the square background required by § 172.510(a) for certain placards on rail cars, and § 172.507 for placards on motor vehicles containing a package of highway route controlled quantity radioactive materials, must be as follows:\n\n(b) In addition to meeting the requireme","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-172-527.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-172-527.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-172-527","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-172.527","body":"(a) Except for size and color, the square background required by § 172.510(a) for certain placards on rail cars, and § 172.507 for placards on motor vehicles containing a package of highway route controlled quantity radioactive materials, must be as follows:\n\n(b) In addition to meeting the requirements of § 172.519 for minimum durability and strength, the square background must consist of a white square measuring 14 1/4 inches (362.0 mm.) on each side surrounded by a black border extending to 15 1/4 inches (387.0 mm.) on each side.\n\n[Amdt. 172-29, 41 FR 15996, Apr. 15, 1976, as amended by Amdt. 172-64, 46 FR 5316, Jan. 19, 1981; Amdt. 172-78, 48 FR 10226, Mar. 10, 1983]","truncated":false,"body_characters":678}