eCFR :: 49 CFR 393.24 -- Requirements for head lamps, auxiliary …
Every bus, truck and truck tractor shall be equipped with headlamps as required by § 393.11 (a). The headlamps shall provide an upper and lower beam distribution of light, selectable at the …
49 CFR § 393.24 - LII / Legal Information Institute
Every bus, truck and truck tractor shall be equipped with headlamps as required by § 393.11 (a). The headlamps shall provide an upper and lower beam distribution of light, selectable at the …
Must additional lamps that are not required be operative if all ...
Section § 393.24: Requirement for head lamps, auxiliary driving lamps and front fog lamps. Question 1: Must additional lamps that are not required be operative if all required lamps are …
Federal Motor Vehicle Safety Standard 108 - Wikipedia
Federal Motor Vehicle Safety Standard 108 (FMVSS 108) regulates all automotive lighting, signalling and reflective devices in the United States. Like all other Federal Motor Vehicle …
Federal Motor Vehicle Safety Standards; Lamps, Reflective ... - Action
Dec 30, 2024 · This document denies all petitions for reconsideration received in response to the final rule.
2025 Headlight Laws: Explore Legal Landscape for Vehicle Headlights
Dec 22, 2025 · The manufacturers are instructed to mark their headlights DOT-compliant for use on the US roads. If your headlights are not DOT-compliant, you can’t drive with them.
Are LED Headlights Legal in the US? (State-by-State Guide)
Apr 11, 2025 · Factory-installed LED headlights in new vehicles are 100% legal. They comply with DOT (Department of Transportation) and SAE standards. Legal if the entire headlight housing …
DOT vs. ECE vs. SAE: Headlight Standards Explained
May 21, 2025 · If you want to sell LED headlight bulbs in the U.S. or Canada, your products must be DOT compliant—meaning they meet the Federal Motor Vehicle Safety Standards …
How to Replace Car Headlights and Ensure DOT Compliance
Jul 24, 2025 · Discover how to replace car headlights, adjust beams, and ensure DOT compliance for safe driving.
Laws and Restrictions for Headlights and Taillights - Nolo
Nov 26, 2025 · The DOT and SAE certify headlights that are legal in the United States. As long as the headlight is labeled as DOT or SAE approved, it is generally legal to operate in all 50 states.