This document specifies:
- the interfaces between electronic fee collection (EFC) back-office systems for vehicle-related transport services, e.g. road user charging, parking and access control;
- an exchange of information between the back end system of the two roles of service provision and toll charging, e.g.:
- charging-related data (toll declarations, billing details),
- administrative data, and
- confirmation data;
- transfer mechanisms and supporting functions;
 information objects, data syntax and semantics.

This document is applicable for any vehicle-related toll service and any technology used for charging.

The data types and associated coding related to the data elements described in Clause 6 are defined in Annex A, using the abstract syntax notation one (ASN.1) according to ISO/IEC 8824-1.

This document specifies basic protocol mechanisms over which implementations can specify and perform complex transfers (transactions).

This document does not specify, amongst others:
- any communication between toll charger (TC) or toll service provider (TSP) with any other involved party;
- any communication between elements of the TC and the TSP that is not part of the back-office communication;
- interfaces for EFC systems for public transport;
- any complex transfers (transactions), i.e. sequences of inter-related application data units (ADUs) that can possibly involve several application protocol data unit (APDU) exchanges;
- processes regarding payments and exchanges of fiscal, commercial or legal accounting documents; and
- definitions of service communication channels, protocols and service primitives to transfer the APDUs.