the gates usually only give tickets to large metal objects (like cars) because they have sensors in the road underneath the ticket machine. There was a Mr. Bean sketch about this event. He used a large metal rubbish bin to get a ticket.

What, other than an interest in the commercial success of the car lot business, normative social influence and scrupulosity (all tenuous)

These are what holds society together. These are what society is -- including the bit about commercial success.

But have you tried? The entry barriers only issue a ticket when there's a car in front of them. That's how it works at the car parks I'm familiar with that use that system.

And, to continue the discussion of why your karma is so persistently low, this is something you might have thought of before posting. See also.

Why don't people steal from other people if nobody is looking? General ethics.