Abstract: Performing parking policy enforcement using a mobile device includes presenting a set of street-and-zone pairs, each street-and-zone pair identifying a street and a zone within which at least a portion of the street is located, the street and the zone, in combination, being associated with one or more parking rules. A street-and-zone pair is selected corresponding to a location of a subject vehicle. The license plate number is transmitted to a remote parking enforcement system. Parking rights of the subject vehicle are determined based on the license plate number. It is determined whether the subject vehicle is in violation of parking rules associated with the street and the zone, in combination, of the selected street-and-zone pair based on the parking rights of the subject vehicle. A violation indication is presented indicating whether the subject vehicle is in violation of the parking rules associated with the selected street-and-zone pair.