Reproduced from webbikeworld - unedited.

I tend to agree with this opinion ie not blinding cars.

Motorcycle Light Bulbs - Improving Visibility With Yellow Bulbs?

by Bill C. for webBikeWorld

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There are many wonderful and unique things to do and to see in France.  One of the most curious for me was the use of the very  distinctive yellow headlights on cars in France about 20 years ago or so. 

They looked so...different.  Every once and a while, a car with yellow headlights will pass by on a European road; however, it's my understanding that yellow lights are no longer legal in France or anywhere in Europe, except for auxiliary fog lights. 

But European drivers and motorcyclists will always bend the rules, just like we do here in the U.S.A., and using yellow headlights is one way to look different.

I never really knew why the cars in France had yellow headlights, but I'm told that yellow bulbs can provide better visibility in poor weather because they provide greater contrast.