---
kind: "section"
citation: "23 U.S.C. § 321"
title: "23"
title_heading: "Highways"
number: "321"
heading: "Signs identifying funding sources"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/23/321"
units:
  - "Chapter 3 — General Provisions"
---

# §321. Signs identifying funding sources


If a [State](/usc/23/101.md?p=a-28) has a practice of erecting on [projects](/usc/23/101.md?p=a-20) under actual [construction](/usc/23/101.md?p=a-4) without [Federal-aid highway](/usc/23/101.md?p=a-6) assistance signs which indicate the source or sources of any funds used to carry out such [projects](/usc/23/101.md?p=a-20), such [State](/usc/23/101.md?p=a-28) shall erect on all [projects](/usc/23/101.md?p=a-20) under actual [construction](/usc/23/101.md?p=a-4) with any funds made available out of the [Highway](/usc/23/101.md?p=a-11) Trust Fund (other than the Mass Transit Account) signs which are visible to [highway](/usc/23/101.md?p=a-11) users and which indicate each governmental source of funds being used to carry out such federally assisted [projects](/usc/23/101.md?p=a-20) and the amount of funds being made available by each such source.


## Source credit

(Added Pub. L. 109–59, title I, § 1901(a), Aug. 10, 2005, 119 Stat. 1464.)

## Notes

### Editorial Notes

### Codification

Section, as added by Pub. L. 109–59, consists of text of Pub. L. 100–17, title I, § 154, Apr. 2, 1987, 101 Stat. 209, which was formerly set out as a note under section 101 of this title, and was repealed by Pub. L. 109–59, title I, § 1901(c), Aug. 10, 2005, 119 Stat. 1464.

### Prior Provisions

A prior section 321, added Pub. L. 91–605, title I, § 115(a), Dec. 31, 1970, 84 Stat. 1723; amended Pub. L. 96–106, § 11, Nov. 9, 1979, 93 Stat. 798; Pub. L. 100–17, title I, § 131, Apr. 2, 1987, 101 Stat. 170; Pub. L. 102–240, title VI, § 6002, Dec. 18, 1991, 105 Stat. 2166; Pub. L. 105–130, § 5(e)(3), Dec. 1, 1997, 111 Stat. 2557, related to National Highway Institute, prior to repeal by Pub. L. 105–178, title V, § 5119(b), June 9, 1998, 112 Stat. 452.