CFR›Title 49›Subtitle B›Chapter I›Part 178›Subpart J›49 CFR 178.346 Citation49 CFR 178.346CorpusDaily eCFRDisplayed edition2026-09-09Last updated2026-09-09 § 178.346 Specification DOT 406; cargo tank motor vehicle. Previous 178.345-15 § 178.345-15 Certification. Next 178.346-1 § 178.346-1 General requirements.