Send it to the respective authorities, a complaint about wild parking. Police confirmed that a follow-up to the complaints of citizens in this way, according to the provisions of paragraph 5 of article 170 of the Highway Code. In Lisbon for example, between January and March 2017, in just three months, they have been raised over a thousand records with this source. The application already covers all regions of the country, and already provides a number of parking illegalities such as car parked in place of deficient or before a traffic light.
This application is completely free, without advertising and its code is completely open and shared (open-source; https://github.com/jfoclpf/form-for-parking-violation). Consider it when classifying the application.