New AI line + hints for Riverside by LilSki.
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.
I have tested these lines mostly with the RSS GT1 cars, Group C cars and GT3 cars.