Notice that it doesn't say it changed lanes; rather, it shifted to the leftmost-side of its lane, later to return to the center of the lane (which is when the b

Notice that it doesn't say it changed lanes; rather, it shifted to the leftmost-side of its lane, later to return to the center of the lane (which is when the bus hit it). I get your point, though, and I imagine it could have gone something like this: Car predicts bus will slow down (as reported), moves back to center of lane. Bus doesn't, and the car's sensors inform of it. During the seconds (or the fraction of a second) before the collision, the car came up with the safest avoidance maneuver, and started executing it. Crash.