I'll head this off at the pass. This is in P&C because cycling vs. motorist apparently is a hot button issue. This thread is not about that. There is also the idea that rules of defensive driving should be used to blame victims when accidents occur. This thread is not about that, either.
Instead, this thread is about concrete personal driving rules and policies we can use to keep ourselves safe and accident-free. It is not about public policy. This is about personal practices. There is some overlap, of course. Effective personal driving strategies are affected by public driving rules and traditions, of course; but the focus is on discussing the personal, not the public.