Overview
ISO/TS 21193:2024 - Electronic fee collection - Requirements for EFC application interfaces on common media (ISO, 2024) defines requirements to support information exchange within a common payment scheme. The technical specification focuses on Electronic Fee Collection (EFC) application interfaces stored on a shared payment medium (e.g., on-board accounts or chip-based media) and specifies EFC functional requirements, application structure and EFC application data for that medium. It clarifies the role of the common service rights provider (CSRP) and how a common payment medium enables interoperability across transport and commerce services while explicitly excluding full security implementations, complete risk assessments, privacy-implementation detail and CSRP financial transaction specifications.
Key Topics
- EFC architecture requirements: Conformance with the EFC roles model (ISO 17573‑1) and integration of the CSRP role into multi‑modal transport ecosystems.
- Functional EFC requirements: Definitions of the functions needed on a common payment medium to support tolling and multi‑modal services (on‑board account use cases).
- Application structure: Standardized layout and examples for EFC applications in a shared medium (see informative Annex D).
- EFC application data: Data definitions and attribute groups for receipts, payments and account records; data type specifications in Annex A and an ASN.1 module for formal data definitions.
- Implementation aids: ICS pro forma (Annex B), migration guidance (Annex F), reloading examples (Annex G) and security requirement guidance (informative Annex H).
- Scope limits: Excludes transport service data definitions (public transport specifics), full security/trust relationships, concrete cryptographic implementations and detailed privacy mechanisms.
Applications
ISO/TS 21193:2024 is intended to enable interoperable, multi‑modal payment solutions by harmonizing how EFC applications interact with a common payment medium. Practical applications include:
- Integrating road tolling (ETC) with public transport and retail payment services via a single on‑board or contactless medium.
- Specifying application interfaces for manufacturers of On‑Board Equipment (OBE), back‑office integrators and middleware providers.
- Guiding system migration and reloading processes for operators moving from legacy media to common payment schemes.
- Providing a data model and conformance checklist for implementers and testing bodies.
Who should use this standard
- Toll operators and Transport Service Providers (TSPs)
- CSRP platform designers and operators
- OBE and roadside equipment (RSE) vendors
- System integrators, ITS architects and national standards bodies
- Solution providers for multi‑modal fare and payment systems
Related Standards
- ISO 14906 - EFC application interface for DSRC
- ISO 17573‑1 / ‑2 / ‑3 - EFC system architecture, vocabulary and data dictionary
- ISO 21177 - secure data transfer mechanisms (referenced for subclause 7.1)
Keywords: ISO/TS 21193:2024, electronic fee collection, EFC application interfaces, common payment medium, CSRP, on‑board account, OBE, multi‑modal transport, EFC architecture, ASN.1.