Sucks - probably THE MOST DISAPPOINTING of the RAM accessories/features.
Someone earlier mentioned the Honda's - my '16 Pilot Touring would basically AUTO-PILOT with LKA & Adaptive Cruise. Almost as good as the Tesla. WIll follow curves to an extent and keep you centered in the lane.
RAM - NO DICE. It's more annoying than useful. I had high expectations, being that the technology is pretty mature at this point, and the RAM is 4 production years newer than the Honda. Not a "deal breaker" for me, by any stretch - where lack of Adaptive Cruise steered me away from Chevy/Ford (even on the upscale loaded denali/high country, none for the trucks on ANY LOT had it installed, but you could "factory order" it).
I leave it OFF - by the time it alerts you, you're already out of the lane. Pretty much worthless after 90K miles of it in the Honda.
Rick