This document identifies the architecture of a toll system environment in which a toll charger (TC) can 
act to support traffic management with the use of a tariff scheme.
The scope of this document defines:
— the architecture related to the scope;
— a standard framework and data flow model;
— an exchange of information between a TC and a road and traffic manager (RTM), e.g.:
— level of service (LOS);
— tariff scheme;
— data which is needed to support traffic management (vehicle probe and traffic flow data).
This document is a toolbox standard of application protocol data units (APDUs), which can be 
used for the assigned purpose. The detailed definitions of mandatory and optional elements in real 
implementation are outside the scope of this document. This document does not define communication 
stacks or timings.
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 
allows the implementer to define suitable protocol procedures such as basic interaction, protocol 
mechanism, and choice of transfer protocol.st edition 2019-10 Electronic fee collection — Support for traffic management Perception du télépéage — Aide pour la gestion du trafic Reference number ISO/TS 21192:2019(E) ？ ISO 2019 ISO/TS 21192:2019(E) COPYRIGHT PROTECTED DOCUMENT ？ ISO 2019 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of