New AI line + hints for Road Atlanta 2016 by Jim Lloyd.
The track can be downloaded here.
Just unzip and copy the specific track folder to your assettocorsa\content\tracks, it will automatically copy the new ai + hints to the correct folder. Perhaps make sure to keep your old AI files if you don't like the new ones.
Road Atlanta 2016 AI 2017-11-19
New AI line + hints