Quote:
Originally Posted by Red__Zed
They do candela measurements at various incident angles. You must be compliant from all applicable angles. Basically, fail one, fail em all.
Not only is there not a good field test for luminescence, it means nothing as applied to the law.
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True, but again it would depend on where you would be standing. Is there a standard or specific distance?
I'm just saying an officer wouldn't really have any way of accurately measuring if the fog light is too bright or not other than visual observation. Even if he had a light meter, he could measure it from 2" away and have it 'fail' or 100 feet away and have it 'pass'. I honestly don't know what the standard is, or if there is even one on fog lamps. It's not black & white since different light fixtures emit light differently, but I think total luminosity would be easier to compare if something were legal or not. Using a specific candela reading would certainly be a more accurate for specific spot.