LTNman
Ok yeah that makes more sense, timed from the moment you enter the CTA via camera.
They will just have to police the drop off area accordingly to prevent the 30min stayers and your scenario happening!
There is a lane at the bottom of the short stay car park parallel to the south stands presumably for pre payment of your ticket before leaving the short stay.
Visitors to Easy or deliveries must get a card or number to enter when leaving?