I was Useing the lane keeping assist and steering assist. i was driving down the hyw and parts of the solid white line to the right of me was faded or missing with no sholders. a wide truck that was about to pass me going the opposite direction had crossed over the center lane line and the stearing assist jolted me to the right where there was no visible line as i tryed to turn the steerting wheel to the left the assist jolted me to the right as the line became visible again causing us to go in to a big ditch