A Collaborative Legal Framework For Certified Enforcement With ITSIbus ALPR

Abstract

This paper discusses a collaborative framework for the legal certification of toll enforcement on motorways operated by Brisa Auto-Estradas de Portugal, based on the Advanced License Plate Recognition (ALPR) system/service. The developed ALPR service produces a composite JPEG picture documenting an irregular situation. An enforcement transaction is generated at Brisa’s toll infrastructure and later delivered to the toll clearing company Via Verde Portugal (VVP). This company processes the generated composite picture, matching it with the client data base and, if necessaty, pursuing legal action. The enforcement picture might also be delivered to other organizations, such as the official entity for car registration management, in Portugal the General Direction of Traffic (DGV). Certification is based on Public Key Infrastructure (PKI) and legal digital certificates. Its purpose is to guarantee the validation of an ALPR generated picture as genuine, at a court of law; any change will be detected by a validation service. The paper discusses the adopted strategy, considering not only technical but also organizational issues, since the trust required for the management of enforcement pictures along the involved networked organizations requires a set of procedures to be followed in order to ensure the required legal confidence (trust).