CFR›Title 23›Chapter I›Part 490›Subpart F›23 CFR 490.605 Citation23 CFR 490.605CorpusDaily eCFRDisplayed edition2026-06-26Last updated2026-06-26 § 490.605 Definitions.The definitions in § 490.101 apply to this subpart. Previous 490.603 § 490.603 Applicability. Next 490.607 § 490.607 National performance management measures to assess freight movement on the Interstate System.