Driving lights can be used with either dip or full beams, while fogs should be used with dip beams only.
Think on it this way - if you're going to use fogs, it's probably foggy. If it's foggy, you damn sure DON'T want to use full beams, since you'll get "whited out" and feel like you're inside a table tennis ball. NOT conductive to driving effectively...
There's a reason that fogs also tend to be amber - the amber light does a better job of NOT causing white-out than the white does, and that makes for better visibility.
There are three main sorts of auxiliary light:
1) Fog Lamps. Typically with an amber colour, they feature a WIDE dispersal pattern, and a LOW cut-off. The better ones actually have a slight downward cast inbuilt, and the BEST (IMO) are Per-Lux, which feature a wide pattern, low cutoff, and louvers over the lenses. These can be found at heavy truck and OTR supply shops. Should ONLY be used with dip beam.
2) Pencil-beam Driving Lamps - feature a concentrated beam with low dispersal, and offer probably twice the downroad visibility of your full beams. Good for plains driving. Can be used with dip or full beam - usually dip.
3) "Helper" driving lamps. Brighter than fogs with a white beam, they are not quite as wide as fog beams, and feature a much higher cut-off, and work to fill in what you lose in going from "dip" to "full" beam - side visibility. Can be used with dip or full beam - usually full.
Anything beyond these three will probably be a small floodlamp for roadside work, illuminating obstacles at night, or some other purpose.
I'm not trying to shut your idea down - I just want to see if there are any gaps in your education that might want filling, and try to help you A) drive better, and B) not annoy everyone else on the road...
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