CFR›Title 49›Subtitle B›Chapter I›Part 179›Subpart F›49 CFR 179.400 Citation49 CFR 179.400CorpusDaily eCFRDisplayed edition2026-10-01Last updated2026-10-01 § 179.400 General specification applicable to cryogenic liquid tank car tanks. Next 179.400-1 § 179.400-1 General.