On Jan 26, 8:07 pm, "Gene Kwiecinski" <[email protected]> wrote:
[...]
> That's why shooting glasses, driving glasses, etc., are yellow-tinted,
> to improve contrast (by blocking blue almost 100%). That's also why
> foglights tend to be tinted yellow (even regular headlights in France,
> iirr, are mandatorily yellow; someone correct me if that changed)
> because that improves contrast in fog, etc.
The actual motivation for the yellow headlights is because the
French military requested it (in 1936), in order to easily
distinguish between French cars and others. The fact remains
that with modern headlights and filtering techniques, they blind
oncoming drivers significantly less, while not reducing what you
can see.
The law was abrogated in 1992, in order to comply with EU
regulations; both white and yellow are legal now (and since all
other countries require white, all manufacturers deliver white
on new cars).
--
James Kanze (GABI Software) email:[email protected]
Conseils en informatique orientée objet/
Beratung in objektorientierter Datenverarbeitung
9 place Sémard, 78210 St.-Cyr-l'École, France, +33 (0)1 30 23 00 34
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