Now that we know the science behind why yellow light is better than blue or white in night time driving conditions let us learn the history of yellow headlights are called “French” lights. In 1936 the French government passed a law stating all vehicles produced from 1937 onward must have yellow headlights. Although the main purpose was for safety, some say this was also a way for the French government to easily discern a French car from a foreign car while driving at night. This was important during WWII in the 1940’s. By 1993 France was forced by the European Union to conform to their standards of safety, thus the going away of the yellow headlights in exchange for compliance of using white headlights. If a French car was first registered prior to 1993 you are able to still have yellow headlights.

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