U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 30, 2025

All TitlesTitle 23Chapter IPart 1 - PART 1—GENERAL
§ 1.1 - Purpose.
§ 1.2 - Definitions.
§ 1.3 - Federal-State cooperation; authority of State highway departments.
§ 1.5 - Information furnished by State highway departments.
§ 1.7 - Urban area boundaries.
§ 1.8 - [Reserved]
§ 1.9 - Limitation on Federal participation.
§ 1.11 - Engineering services.
§ 1.23 - Rights-of-way.
§ 1.27 - Maintenance.
§ 1.28 - [Reserved]
§ 1.32 - Issuance of directives.
§ 1.33 - Conflicts of interest.
§ 1.35 - Bonus program.
§ 1.36 - Compliance with Federal laws and regulations.
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