ISO 12855:2022

—    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.