[klmadfejno]

Events like this are rare, and often not handled well by humans. You have 3 basic options, and in reality some mix of all of them.

1) Hit the object 2) Swerve 3) Brake

Hitting the object is almost always a bad idea. On a highway the best option is almost always 2. On an empty road, the best option is almost always 3.

Saying things like "You also look at the traffic beside you and behind you to evaluate risk of braking or swerving" implies that humans are good at this and computers are bad at this. I'd wager humans are bad at this and computers are good at this. And in either case, situations like these represent a small fraction of accidents on the road. If the computer arbitrarily chose to recklessly swerve to the nearest lane every time it would still likely outperform human drivers in terms of safety if it solves the low hanging fruit elsewhere.