There are just under ninety minutes remaining in the Petit Le Mans at Road Atlanta. They started the race an hour later this year, so there's an additional hour of racing in the dark!
I attended the race a few years ago and during the final night practice I was looking for the best viewing locations for Saturday's race. Of course I had to check out the various ways the teams had chosen to direct their lights, and it reminded me of that saying about opinions - everyone seemed to have a different idea of how to do it. Speaking of how to do it, at the time halogen, HID and LED were all being used in some combination or another.
What I didn't expect to see was so much foreground light, especially considering the speeds involved. Also, despite all of the different approaches, not a single car's primary lights' output (beyond the foreground) could be considered to be uniform, free of artifacts, easy on the eyes and, therefore, helpful to the driver. It was a tunnel of light here, a tunnel of light there, a hot spot here, a hot spot there, "holes" here, there and everywhere and it all just struck me as being distracting and fatiguing.
As for the auxiliary lights used to light the corners, only one car's lights were cross-eyed, all others' were splayed.
There was one car whose auxiliary lights stood out from the others. This car was in one of the GT classes so yellow output was required, and it had what looked like a large, yellow, rectangular "carpet of light" preceding it. There were none of the aforementioned artifacts, holes, etc. It was just a unbroken yellow rectangle. I would think it had to help at least somewhat minimize the problems previously mentioned.
Naturally, I needed to know more so I tracked down this car during the pre-race grid walk. I no longer remember the model, but it was a Vision-X LED of some sort.
If you're interested, the race is on NBCSN.