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Regulations last checked for updates: Aug 02, 2025
Title 23 - Highways last revised: Jul 15, 2025
All Titles
Title 23
Chapter I
Part 645
Subpart C -
§ 645.301 - Purpose.
§ 645.303 - Applicability.
§ 645.305 - Definitions.
§ 645.307 - General requirements.
§ 645.309 - Limitations.
authority:
23 U.S.C. 101
,
109
,
111
,
116
,
123
,
and
;
47 U.S.C. 1504
;
23 CFR 1.23
and 1.27;
49 CFR 1.48
(b); and E.O. 11990, 42 FR 26961 (May 24, 1977)
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