Originally Posted by mishar
A8 HID's are single filament but they have shutter directing light output as a low beam.
Are driving lights (as in spot lights which you can wire-in using an independant switch and trigger using the high-beam relay)) legal in the US?
If so, I don't understand why the inner light would be illegal as a high-beam light.
IMHO the entire point of high-beam is to get maximum light output onto the road in front of the car as possible when other vehicles aren't around. You must get dark country roads with no lighting and wandering wildlife like we do. I've had driving lights on every car I've owned until the S8 (including my A4) to maximise light output on high-beam