It does say lane "keeping" not lane "changing". I assume it's the safety feature to remain in the lane.
I've seen lanes on highways that abruptly end with zero markings or signs - the concrete barriers just force you into the other lane just as you realize what's going on.
alt Hacker News
I've seen lanes on highways that abruptly end with zero markings or signs - the concrete barriers just force you into the other lane just as you realize what's going on.