I am convinced that if you always physically turn your head to check your blind spot in LA traffic then you will eventually rear-end a car that slammed on its brakes when your head was turned. And those that say to give more distance from the car in front of you haven't driven in such conditions because another car will change lanes to take that space. I adjust my mirrors so there isn't a blind spot but I have to lean over in the direction of the mirror to see the side of the car. This way I never have to actually turn my head away from traffic. And I have learned to trust the nav display information on my Model Y. If there isn't a red vehicle symbol then don't dilly dally, change lanes. For me, it's a lot more information than a yellow indicator on a side-view mirror.
I've found I cannot rely on the red vehicle indicator. There is too much lag. What I consider too close does not show as red on the screen, especially if that car is moving quickly. Also the car is spotty at recognizing motorcycles. So if you only rely on the red car indicator you may seriously injure or kill a motorcyclist, of which there are a lot riding in between lanes here in LA. A quick head turn and plenty of room between you and car in front of you is the safest way to go.