Safety regulations

Aug. 10, 2016

Included in the Federal Motor Carrier Safety Administration’s safety regulations are requirements for vehicle lighting. These include:

- 49 CFR 571.108 - Standard No. 108; Lamps, reflective devices, and associated equipment. This standard specifies requirements for original and replacement lamps, reflective devices and associated equipment on passenger cars, multipurpose passenger vehicles, trucks, buses, trailers (except pole trailers and trailer converter dollies) and motorcycles.

- 49 CFR 393.24 - Requirements for head lamps, auxiliary driving lamps and front fog lamps. Among other things, this regulation states that:

+ Commercial motor vehicles may be equipped with auxiliary driving lamps and/or front fog lamps for use in conjunction with, but not in lieu of, the required headlamps. Auxiliary driving lamps need to meet SAE Standard J581, Auxiliary Upper Beam Lamps, and front fog lamps need to meet SAE Standard J583, Front Fog Lamp.

+ Auxiliary driving lamps and front fog lamps shall be mounted so that the beams are aimable and the mounting shall prevent the aim of the lighting device from being disturbed while the vehicle is operating on public roads.

+ Headlamps, auxiliary driving lamps and front fog lamps shall be aimed to meet the aiming specifications in 49 CFR 571.108, SAE J581 and SAE J583, respectively. 

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