If you do see that, you immediately should know the car is from France.
In 1937, France mandated yellow headlights to, "filter out violet, blue, and indigo light, which cause glare and dazzle for oncoming motorists" according to Google AI. Also, during World War II, it helped distinguish civilian cars from those of the Germans.
The French required yellow headlights on civilian cars until 1993, when European Union laws superseded French law. And EU law does not allow yellow headlights. If you're French and you want to put yellow headlights on your car, it has to predate 1993. Otherwise, it's illegal.
It would be interesting to see if the yellow headlights achieved their goal of making the road safer in France. Did anyone do a study on that? I don't know.
I frankly think the yellow headlights are ugly. But that's just me.
What do you think of yellow headlights. Let me know in the comments below.


