Okay so in front of my wife's work there's a loading zone and it's for 20 minutes. Today I got a ticket in the mail from one of those parking cars that have multiple camera's mounted on them. My hood in the picture is parked just past the loading zone sign and my window is rolled down a bit and you can see me in the picture. My question is how do they know how long i have been in the spot for because I was sitting in the car for about 15 minutes waiting for her to get off work and no one came by to chalk the tires? Am I even allowed to be stopping in a loading zone if I'm just picking someone up?