county
(5) County .— The term “county” includes corresponding units of government under any other name in States that do not have county organizations and, in those States in which the county government does not have jurisdiction over highways, any local government unit vested with jurisdiction over local highways.
Source
23 USC § 101(a)(5)
Scoping language
None identified, default scope is assumed to be the parent (chapter 1) of this section.