Every on ramp merge needs to be geo-fenced so the car follows the lane mark on the left and doesn't swerve right trying to get in the middle of the left lane marker and the merging line on the right of the merging lane. Dangerous now. I noticed in NY they have dotted lines across the merging lane which will prevent the drift to the right, but in WA no such dots.
That's not Tesla's AP philosophy. They've been trying very hard not to geofence and custom solve any location - lots of extra data for the car to keep, opportunities to miss something, and risks when something changes.
Instead, they need to teach the NN not to steer into the middle of the lane as aggressively when the lane abruptly widens because of a merge.