This all sounds good, but ! This would only work if individual pairs of lights could be illuminated on the Alta light bar.

There is never any time that you would want to have fog lights and driving light illuminated at the same time.

After reading and re-reading the Alta product information there is nothing to indicate that there is any difference between any of the lights regardless of the color. All of their information says that these 4 lights have a magical combination lense that can produce a long range, narrow, driving light pattern and a flat topped, wide spread, fog light pattern all in the same units. I applaude their engineers if they can do this.

But since the physical laws of optics have not changed recently I am more than a little skeptical.

You would want to mount the fog lights as low as possible, under the bumper, to improve their effectiveness. The driving lights would best be mounted as high as possible. Even as high as being attached to the roof rack.

Additionally, most states limit the number of lights illuminated at any one time to 6. That would be main beam, high beam & 2 driving lights(driving lights would never be on without the high beams, and most cars have their main beams on with their high beams). Or main beams and up to 4 fog lights.

 

Actually, I believe its Four Lamps (considering OEM lamps contain both lows and highs). That means your headlight plus One other set.

I can see times when you might want fogs on AND Driving Lights because there are different kind of driving lights. The most common types spread out much like the highs but dont light up the road to the sides and low ... if you want to see there which can be helpful on dark country roads, two lanes.

The less common Driving Lights are the pencil beams with maybe a 5 degree spread which are meant for true high speed driving and reach out FAR beyond your highs. In that case, on some kind of highway, no need for fogs

It also depends upon how "good" or how "big" the reflectors are because in this case SIZE COUNTS. Those itty bitty "driving lights" sold by PIAA arent worth a squat of .... I made the mistake of putting them on a truck and they are more like fogs (but no wide beam). Bigger reflectors are always better.

 

If you want the lights as fogs, get the bar and find different lights. As for mounting them low, if you want to get the maximum amount of light, yeah they should be higher. But even with mine mounted low they deliver PLENTY of light. It looks like someone turned on the sun when mine are all on and I feel like I have little flashlights stuck to the front of my car when I turn them off but still have on my brights...not that my brights are dim, its just that these are so freakin bright

 

I dont think anyone doubts that. I think they doubt the effectiveness of the "kind" of light being thrown since its got to be a compromise ... you can't have it both ways ... fogs and driving beams in the same lens design. One or the other will suffer. I think thats all they mean. Kind of like All-season tires ... OK for most things but not the best for summer heat or winter snow

 

I updated the link in my sig with a couple pics of the FF200's with Nokya yellow bulbs. I left my good camera at the dorm so the quality isn't very great. I think it gives you the idea though...

 

I'll edit this shortly with some pics. I recently put on a set of the IPF yellows on Kathy. The lenses are nowhere near as yellow as they are shown on the ALTA website. If I had to guess I'd say the ones shown had a yellow film over them or they were a previous version of the lamps that are no longer available. As for how bright they are versus the white lights. I haven't plugged mine in yet (still waiting on my circuit boards and microcontroller) so I really don't know how bright they are.

Edit: Pics added, notice that the yellow is actually quite similar to PIAA ion yellow and that its only visible from the right angle. In fact this effect is so noticeable that my view from above the camera looked almost totally yellow while the first picture show only a little yellow.