> Cameras are there, sure, but is there someone going through all the hours of footage to ensure that no car that shouldn’t pass made it through?

Every one? No. Some? Yes. Is there enough of a chance of getting caught that it's worth risking your significant investment into being able to do inspections for a $20?

>but I think to just expect that the camera actually prevents cars from being passed when they shouldn’t is naive.

What do you think the cameras are intended for?