Code of Federal Regulations > Title 49 > Chapter III > Part 393 > Subpart B - Subpart B—Lamps, Reflective Devices, and Electrical Wiring

Regulations last checked for updates: May 23, 2025

Title 49 - Transportation last revised: May 21, 2025

§ 393.9 - Lamps operable, prohibition of obstructions of lamps and reflectors.

§ 393.11 - Lamps and reflective devices.

§ 393.13 - Retroreflective sheeting and reflex reflectors, requirements for semitrailers and trailers manufactured before December 1, 1993.

§ 393.17 - Lamps and reflectors—combinations in driveaway-towaway operation.

§ 393.19 - Hazard warning signals.

§ 393.20 - [Reserved]

§ 393.22 - Combination of lighting devices and reflectors.

§ 393.23 - Power supply for lamps.

§ 393.24 - Requirements for head lamps, auxiliary driving lamps and front fog lamps.

§ 393.25 - Requirements for lamps other than head lamps.

§ 393.26 - Requirements for reflectors.

§ 393.27 - [Reserved]

§ 393.28 - Wiring systems.

§ 393.29 - [Reserved]

§ 393.30 - Battery installation.

§§ 393.31-393.33 - §[Reserved]

authority: 49 U.S.C. 31136,31151,31502; sec. 1041(b), Pub. L. 102-240, 105 Stat. 1914, 1993; secs. 5301 and 5524, Pub. L. 114-94, 129 Stat. 1312, 1543, 1560; and 49 CFR 1.87

source: 33 FR 19735, Dec. 25, 1968, unless otherwise noted.