CFR›Title 49›Subtitle B›Chapter I›Part 179›Subpart F›49 CFR 179.500 Citation49 CFR 179.500CorpusDaily eCFRDisplayed edition2026-09-09Last updated2026-09-09 § 179.500 Specification DOT-107A * * * * seamless steel tank car tanks. Previous 179.401-1 § 179.401-1 Individual specification requirements. Next 179.500-1 § 179.500-1 Tanks built under these specifications shall meet the requirements of § 179.500.