Rigid Industries D-Series PRO SAE Fog Yellow PairRIGID's SAE DOT Selective Yellow fog lights were developed specifically for dust, fog, and other low visibility conditions. Selective Yellow offers superior performance in adverse lighting conditions thanks to the unique attributes of the human eye that make it easier to process light in longer wavelengths like yellow as opposed to shorter wavelengths like blue and violet. This in turn reduces glare, enhances definition, and improves contrast,