Poor drivers are often impatient and careless in their driving habits. They are why we pay ever increasing insurance premiums. I consider getting hit by a careless driver from behind my vehicle the jackpot accident. They and their insurance company will compensate me dearly for the driver's carelessness having caused such an accident.

I taught my kids and my wife to be defensive drivers a and to always look out that the other person will do something stupid.

I am 77 and let my driver's license expire as it is no longer safe for me to drive.

I don't follow a specific rule but don't break rules either. Not a slow driver but don't go over the limit. What you are describing is an everyday thing in LA, some of those are just annoying, some look like they belong in a psychiatric institution.