Overview
ISO/TS 21193:2019 - "Electronic fee collection - Requirements for EFC application interfaces on common media" specifies requirements to enable information exchange between entities using a common payment medium for electronic fee collection (EFC). It defines EFC functional requirements, an application structure for a common payment medium, and EFC application data formats. The Technical Specification focuses on interoperability for multi‑modal transport and tolling scenarios where a single payment medium (e.g., IC card, smart phone) carries on‑board accounts or references to central accounts.
Key topics and technical requirements
- EFC architecture requirements: Architectures must align with the EFC roles model in ISO 17573‑1 and define responsibilities for the Common Service Rights Provider (CSRP).
- EFC functional requirements: Functional elements that enable EFC use with a shared payment medium, including transaction models and account references (on‑board vs central accounts).
- Application structure and data: Specifications for how EFC applications are structured on common media and the required EFC attribute data groups (e.g., RECEIPT, PAYMENT).
- Data type and conformance: Annex A provides data type specifications and Annex B offers an Implementation Conformance Statement (ICS) pro forma to support testing and compliance.
- Informative guidance: Annexes cover common payment medium concepts, application structure examples, migration strategies, reloading examples (including a Korean ETC case), and EFC security considerations (Annex H).
- Out of scope: Explicitly excludes full security implementations, complete risk assessments, privacy‑specific detail, transport‑service data definitions beyond EFC, and CSRP financial transaction processing.
Practical applications and users
ISO/TS 21193:2019 is aimed at professionals implementing interoperable EFC solutions across tolling and public transport:
- Transport authorities and toll operators establishing multi‑modal fare and toll schemes.
- System architects and integrators designing on‑board account and common payment medium interfaces.
- Payment providers and CSRP operators defining data models and service roles for shared payment media.
- OBE (On‑Board Equipment) and RSE/RSU vendors implementing application interfaces on IC cards or NFC devices.
- Standards bodies and consultants planning migration strategies for legacy systems to common payment media.
Related standards
- ISO 17573‑1:2019 - EFC system architecture and EFC roles model (normative reference).
- ISO 14906:2018 - EFC application interface definition for DSRC (normative reference).
- ISO/TR 19639 and ISO/TR 20526 (contextual background on common payment media and integrated accounts).
ISO/TS 21193:2019 helps implement interoperable, multi‑modal EFC ecosystems by standardizing application interfaces, data structures, and role definitions for common payment media. Keywords: ISO/TS 21193:2019, Electronic fee collection, EFC, common payment medium, CSRP, on‑board account, ETC, payment medium.
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