I was dropped off at LAX by UberX a couple days ago. After I got out of the car, a motorcycle cop pulled up to the driver and engaged in a rather long conversation. I don't know the discussion was about, or if he was cited, as I watched from inside the terminal for a minute then walked away while they were still talking.

The same driver said that he does pick-ups at LAX, but the protocol is to pick up on the departures level.