CFR›Title 49›Subtitle B›Chapter I›Part 178›Subpart J›49 CFR 178.347 Citation49 CFR 178.347CorpusDaily eCFRDisplayed edition2026-09-11Last updated2026-09-11 § 178.347 Specification DOT 407; cargo tank motor vehicle. Previous 178.346-5 § 178.346-5 Pressure and leakage tests. Next 178.347-1 § 178.347-1 General requirements.