23 U.S.C. § 321 : US Code - Section 321: Signs identifying funding sources

Search 23 U.S.C. § 321 : US Code - Section 321: Signs identifying funding sources

If a State has a practice of erecting on projects under actual
construction without Federal-aid highway assistance signs which
indicate the source or sources of any funds used to carry out such
projects, such State shall erect on all projects under actual
construction with any funds made available out of the Highway Trust
Fund (other than the Mass Transit Account) signs which are visible
to highway users and which indicate each governmental source of
funds being used to carry out such federally assisted projects and
the amount of funds being made available by each such source.