It depends. If someone runs a red light and swerving (assuming it knows it's safe) will avoid an accident I don't see why it shouldn't do it. But I agree this is an edge case and is not an important feature. There are more important things to focus on.

The idea is to add an element of randomness to the decision making. I don't mean to pick random decisions, but when there are decisions that weight approximately the same it should pick the decision based on personality/mood. This would enable the algorithm to adapt and be flexible, instead of a deterministic algorithm that could cause chain unoptimal behavior.