Residents can call a 24-hour number and report the offending cars. Police or council officers will be dispatched and if the car is gone then the plate number will be taken down. Should foreigners try to dodge the tickets then their embassy will be contacted and asked to enforce the fine. Should that not work then the driving authorities in the foreigner's home country will be notified of the offense. The max penalty is $1,500 which may not be much at all when it comes to someone who owns a Lamborghini Aventador or Bugatti Veyron but at least it's a start. It's not as nuts as actually towing and impounding a supercar, like one British city did, but it's a start. Of course we'll need to wait almost a year to see if the PSOP has any affect as winter is coming.