ISO 13141:2024

Overview - ISO 13141:2024 (Localization augmentation for autonomous EFC)

ISO 13141:2024 - Electronic fee collection - Localization augmentation communication for autonomous systems defines standardized short-range communications to augment on-board localization in autonomous electronic fee collection (EFC) systems. The standard specifies how fixed roadside equipment (RSE) communicates location, heading and charge-object identification to on‑board equipment (OBE) using dedicated short‑range communications (DSRC). It is the second edition, revising ISO 13141:2015 and incorporating Amendment 1:2017.

Key outcomes: a single application attribute (LacData) transmitted as application data units (ADUs), mandatory use of access credentials to protect OBEs from spoofed RSE, and support for data origin authentication, integrity and non-repudiation.

Key technical topics and requirements

• LAC application architecture: Defines the application interface between RSE and OBE and the interface to DSRC Layer 7 (SET service) to perform acknowledged writes of LacData.
• LacData attribute: A standardized data container carrying geographic coordinates (latitude, longitude, altitude), heading and charge-object identifiers. All elements are defined; Null values allow partial payloads.
• Security: Mandatory access credentials for RSE write operations and two authenticator fields in LacData to enable authentication, integrity and non‑repudiation depending on institutional needs.
• DSRC stack support: Specific definitions for the CEN DSRC stack (EN 15509) and informative guidance for Italian ETSI/ES 200 674‑1, ISO CALM IR, ARIB DSRC and WAVE DSRC (Annexes C, D, E, H).
• Application data units (ADUs): Attributes and functions are specified at ADU level and made available to LAC applications on RSE and OBE.
• Conformance: Clause 6 defines conformance requirements; Annex B contains a PICS proforma. Transaction examples are in Annex F. Note: test specifications are out of scope for this document.

Practical applications and who uses it

ISO 13141:2024 is intended for:

• Toll operators and EFC service providers implementing interoperable localization augmentation for charging.
• OBE and RSE manufacturers building DSRC-based modules that reliably provide and consume LacData.
• System integrators and ITS authorities deploying roadside augmentation in environments with limited GNSS (tunnels, urban canyons, precise charge-object identification).
• Standards developers and conformance assessors using the PICS proforma and transaction examples to align implementations.

Typical applications include GNSS augmentation for autonomous tolling, reliable charge-object identification at complex interchanges, and secure short‑range communication for European Electronic Toll Service (EETS) environments (see Annex G).

Related standards and cross‑references

• DSRC application layer: ISO 15628, EN 12834
• CEN DSRC stack: EN 15509
• ETSI/ES 200 674‑1, ISO CALM IR, ARIB DSRC, WAVE DSRC (informative guidance in Annexes)
• EFC architecture: ISO 17573 series

Keywords: ISO 13141:2024, localization augmentation, LAC, LacData, electronic fee collection, EFC, DSRC, OBE, RSE, EETS, tolling security, ADU, conformance.