If you mean that the way I think, in Los Angeles when you’re going to make a left turn at a light without a red arrow, AND there’s enough clear road ahead on your left for you to turn into, you’re expected to “post up” into the intersection while you wait for opposing traffic to clear. Which often it never does until the light turns yellow, or even red. Then you’re expected to make your turn on the red, and the car behind you is allowed to follow you if they’ve got their front wheels over the line into the intersection. The cross traffic has to wait until you’ve cleared the box. “Two cars on a red.” Of course if it’s an especially large intersection, it’s possible for the first car and second car to post up so far that a third car can get those wheels over, and all three can make their escape from the box after the light changes. But the cross traffic considers this rude.
If you mean that the way I think, in Los Angeles when you’re going to make a left turn at a light without a red arrow, AND there’s enough clear road ahead on your left for you to turn into, you’re expected to “post up” into the intersection while you wait for opposing traffic to clear. Which often it never does until the light turns yellow, or even red. Then you’re expected to make your turn on the red, and the car behind you is allowed to follow you if they’ve got their front wheels over the line into the intersection. The cross traffic has to wait until you’ve cleared the box. “Two cars on a red.” Of course if it’s an especially large intersection, it’s possible for the first car and second car to post up so far that a third car can get those wheels over, and all three can make their escape from the box after the light changes. But the cross traffic considers this rude.