What designation indicates that headlights are original equipment?

The designation that indicates headlights are original equipment is reflected in the markings of DOT or SAE. These acronyms stand for the Department of Transportation and the Society of Automotive Engineers, respectively. When headlights are marked with these designations, it signifies that they meet the safety standards and regulations set forth by the Department of Transportation for automotive lighting. This ensures that the equipment is suitable for use on public roads and has been tested for quality and safety according to established guidelines.

The other choices, while they pertain to various standards and regulations, do not specifically relate to the designation indicating that headlights are original equipment. ANSI (American National Standards Institute) and ISO (International Organization for Standardization) deal more broadly with the development of safety standards rather than specifically automotive equipment. FMVSS (Federal Motor Vehicle Safety Standards) and CMVSS (Canadian Motor Vehicle Safety Standards) also encompass various vehicle safety requirements but do not directly indicate whether headlights are original equipment. Lastly, EPA (Environmental Protection Agency) focuses on environmental regulations, while DMV (Department of Motor Vehicles) pertains to vehicle registration and licensing rather than equipment specifications.