CFR›Title 49›Subtitle B›Chapter I›Part 179›Subpart F›49 CFR 179.500-1 Citation49 CFR 179.500-1CorpusDaily eCFRDisplayed edition2026-09-09Last updated2026-09-09 § 179.500-1 Tanks built under these specifications shall meet the requirements of § 179.500. Previous 179.500 § 179.500 Specification DOT-107A * * * * seamless steel tank car tanks. Next 179.500-3 § 179.500-3 Type and general requirements.