I've learned that if I attach a couple of wrist weights to the steering wheel the lane centering feature thinks my hands are on the wheel and won't shut off. That and adaptive cruise control is like self driving on the interstate.
I don't even use my lane-assist. Admittedly, I might switch it on if I were driving while dead tired, but I wouldn't use it ordinarily. It's a little aggravating when it resists your trying to change lanes.