{"operation":"document","citation":"49 CFR 176.3","title":"Unacceptable hazardous materials shipments.","source_type":"regulation","agency":"Pipeline and Hazardous Materials Safety Administration","status":"current","official":true,"published_on":null,"effective_on":"2026-08-18","summary":"(a) A carrier may not transport by vessel any shipment of a hazardous material that is not prepared for transportation in accordance with parts 172 and 173 of this subchapter, or as authorized by subpart C of part 171 of this subchapter.\n\n(b) A carrier may not transport by vessel any explosive or ex","machine_formats":{"json":"https://regulus.evalyn.ai/document/49-cfr-176-3.json","markdown":"https://regulus.evalyn.ai/document/49-cfr-176-3.md"},"app_url":"https://regulus.evalyn.ai/document/49-cfr-176-3","source_url":"https://www.ecfr.gov/on/2026-08-18/title-49/section-176.3","body":"(a) A carrier may not transport by vessel any shipment of a hazardous material that is not prepared for transportation in accordance with parts 172 and 173 of this subchapter, or as authorized by subpart C of part 171 of this subchapter.\n\n(b) A carrier may not transport by vessel any explosive or explosive composition described in § 173.54 of this subchapter.\n\n[Amdt. 176-1, 41 FR 16110, Apr. 15, 1976, as amended by Amdt. 176-30, 55 FR 52688, Dec. 21, 1990; 74 FR 2268, Jan. 14, 2009]","truncated":false,"body_characters":487}