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An Interesting Background on Fog Lamps
A good fog lamp produces a wide, bar-shaped beam of light
with a sharp horizontal cutoff (dark above, bright below) at
the top of the beam, and minimal upward light above the cutoff.
Almost all factory-installed or dealer-optional fog lamps, and
a great many aftermarket units, are essentially useless for any
purpose, especially for extremely demanding poor-weather driving.
Many of them are too small to produce enough light to make a difference,
produce beam patterns too narrow to help, lack a sufficiently-sharp cutoff,
and throw too much glare light into the eyes of other drivers, no matter
how they're aimed. Read More ...
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