In foul weather, red lighting is superior to all providing the best vision, but red lighting is bad in most areas due to emergency vehicle usage. Amber is a street legal color that performs well in foul weather such as fog, rain, snow, etc., because it removes blue light waves from the spectrum. Most people up north prefer blue lighting because it bounces light better off snow covered roads and brings the road definition out better. Blue light has short wave length making it the hardest color for the eye to work with, whereas amber light has fewer glares making it less distracting to the eyes, therefore making it a better performer in foul weather.