scope:

This standard specifies requirements for original and replacement lamps, reflective devices, and associated equipment.

Purpose. The purpose of this standard is to reduce traffic accidents and deaths and injuries resulting from traffic accidents, by providing adequate illumination of the roadway, and by enhancing the conspicuity of motor vehicles on the public roads so that their presence is perceived and their signals understood, both in daylight and in darkness or other conditions of reduced visibility.

Application. This standard applies to:

Passenger cars, multipurpose passenger vehicles, trucks, buses, trailers (except pole trailers and trailer converter dollies), and motorcycles;

Retroreflective sheeting and reflex reflectors manufactured to conform to S8.2 of this standard; and

Lamps, reflective devices, and associated equipment for replacement of like equipment on vehicles to which this standard applies.