Code of Federal Regulations > Title 45 > Chapter A > Part 3 -

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Sep 16, 2025

Subpart A [§ 3.1 - § 3.6] - Subpart A—General

Subpart B [§ 3.21 - § 3.27] - Subpart B—Traffic Regulations

Subpart C [§ 3.41 - § 3.44] - Subpart C—Facilities and Grounds

Subpart D [§ 3.61 - § 3.61] - Subpart D—Penalties