This SAE Standard defines and provides a means for the control of colors employed in motor vehicle external lighting equipment, including lamps and reflex reflectors. The document applies to the overall effective color of light emitted by the device in any given direction and not to the color of the light from a small area of the lens. It does not apply to pilot, indicator, or tell-tale lights.
In this revision the following boundaries were harmonized with the ECE fog lighting requirements as specified in UNECE Regulation 48: - the specification for Selective Yellow was changed to the ECE requirements. The boundary y = 0.966 – x was replaced with the pair of boundaries y = 0.440 and y = 0.940 – x. - the specification for White to Yellow was removed.