No act with the title Federal Motor Vehicle Safety Act, referred to in subsec. (b)(3), has been enacted. Provisions authorizing the Secretary of Transportation to prescribe requirements relating to hours of service of employees of a motor carrier are contained in chapter 315 (§ 31501 et seq.) of Title 49, Transportation.

Section was formerly classified to section 13726b of Title 42, The Public Health and Welfare, prior to editorial reclassification and renumbering as this section.

For abolition of Immigration and Naturalization Service, transfer of functions, and treatment of related references, see note set out under section 1551 of Title 8, Aliens and Nationality.