My brother-in-law lives in LA, and parks there every day. He honestly tries not to get parking tickets, but he's been towed once or twice because the street wasn't clear. I know he isn't intentionally trying to break the law. I also got a parking ticket when visiting once. I very carefully looked at the signs, there were 2 other cars on that side of the street. I parked there, and went into visit thinking I was fine. I got back to a parking ticket, and looked at the sign again, and had Monday/Tuesday mixed up. I didn't intend to break the law. It is accidental.
Last I looked up, the city of LA makes somewhere around 200 million a year on parking fines alone. There's tons of places in LA where it appears safe to park, but then you come back to find a ticket on your windshield because there's a sign way off in the distance and obscured by a tree. Parking enforcement "officers" are specifically told to never make exceptions, and their little ticket machines are designed so that, once your license plate is entered, the action can't be undone and they are forced to complete the ticket in order to continue doing their job.
