ISO/TS 21192:2019 PDF

Overview

ISO/TS 21192:2019 - "Electronic fee collection - Support for traffic management" specifies an architectural and data exchange framework that enables toll chargers (TC) to support urban and regional traffic management through tariff schemes. It is a toolbox of application protocol data units (APDUs) and a data-flow model describing information exchanges between a TC and a road and traffic manager (RTM), such as Level of Service (LOS), tariff schemes, vehicle probe and traffic flow data. Data types are defined in Annex A using ASN.1 (ISO/IEC 8824‑1). The specification does not mandate communication stacks, timings, or the exact mandatory/optional elements in implementations.

Key topics and technical requirements

• Architecture & role model: Defines TC and RTM roles and their interaction within an EFC ecosystem to support traffic management.
• Data flow model: Standardized flows between TC and RTM for tariff-setting, toll levying and monitoring LOS.
• APDU toolbox: Predefined message types (examples included in Clause 6) such as:
  • LevelOfServiceAdu
  • TariffSchemeAdu / TariffSchemeRequestAdu
  • RealTimeTollInformationAdu
  • RoadUsageDataAdu
• Data types and coding: Normative data type definitions in Annex A specified in ASN.1 for interoperability.
• Transactions & operations: Procedures for setting tariff schemes based on LOS or travel demand models, levying tolls, and exchanging real-time toll information.
• Privacy and data quality: Requirements and guidance on probe data, road usage data, and protecting user privacy while ensuring data fitness for traffic management.
• Implementation guidance: Allows implementers to define protocol mechanisms, basic interactions and transfer protocols; does not prescribe lower-layer communication stacks or timing constraints.

Applications

ISO/TS 21192:2019 is applicable where EFC systems are leveraged to influence traffic patterns and reduce congestion or emissions. Typical applications include:

• Dynamic tolling and congestion pricing
• Smart route selection to divert flows from congested zones
• Managed lanes / HOV / HOT systems
• Real-time traveler information (via OBE, roadside signs or navigation apps)
• Integration of probe data for LOS monitoring and travel demand modelling

Who should use this standard

• Toll operators and TC system architects
• Road and traffic managers (RTM) designing policy-driven tariffs
• ITS integrators, software vendors and system engineers
• Municipal transport planners and policy makers evaluating congestion-pricing solutions

Related standards

Relevant cross-references and normative standards include:

• ISO 12855:2015 (EFC information exchange)
• ISO 14827 series (DATEX/transport centre interfaces)
• ISO 14906 (EFC application interface for DSRC)
• ISO 17575‑3 and ISO 22837 (probe data / context data)

Keywords: electronic fee collection, EFC, tolling, traffic management, tariff scheme, Level of Service, probe data, dynamic toll, ASN.1, APDU, TC, RTM.