[organsnyder]

I have two vehicles with lane keeping (a 2017 Chrysler and a 2025 Ford). Both of them work quite well. The system in the Chrysler will nudge you back if you drift outside of your lane, while the system in the Ford will do that plus automatically stay centered in the lane when cruise control is active.

I have driven vehicles that have lane departure warnings without lane keeping, and they're much less useful.

[quickthrowman]

Maybe I drive more defensively than most but I almost never drive in the center of the lane unless I am in a ‘middle’ lane with lanes on either side. I drive with my tire riding the correct side of the solid line demarcating the shoulder, people (especially pickups hauling trailers, pro semi drivers are usually good) are really bad at staying in their lanes so I sometimes drive onto the shoulder to prevent an accident in the case of another driver lane drifting and overcorrecting.

[organsnyder]

I typically stay in the middle of the lane, but will drift to one side when I'm passing a vehicle that is wider or potentially erratic. I've never noticed lane-keeping fighting me when there's a car next to me; I wonder if they use the blind spot sensors to detect when to give some leeway in these situations.

[servo_sausage]

Generally the cars with better lane warning/centering use camera or radar to see other vehicles.

We have been moving from pretty crude centering, to adaptive based on other vehicles, to intelligent enough to avoid potholes and cross lane markings deliberately (eg, passing a cyclist on an empty road).

The problem is all these options exist simultaneously, with the same marketing, and same ancap bonus points; even when the actual capability of the car varies massively.