ISO 24535:2007

Overview

ISO 24535:2007 - Intelligent transport systems - Automatic vehicle identification - Basic electronic registration identification (Basic ERI) - defines a lightweight, low-cost framework for uniquely identifying road vehicles using an in‑vehicle tag (ERT) and roadside or mobile reader (ERR). The standard specifies the unique vehicle identifier, selectable functional capabilities for different basic ERI use cases, and minimum data interoperability between ERTs and ERRs. ISO 24535:2007 requires use of a publicly defined air interface but does not mandate which radio protocol to use. It targets simple ITS applications where security requirements are comparable to manually available vehicle data (license plate, VIN), and not the higher-security administrative systems covered by related TS documents.

Key topics and technical requirements

• Unique vehicle identifier: Specification for carrying a standardized or non‑standard identifier on the ERT.
• Functional capabilities: A set of selectable, basic ERI functions appropriate for simple identification applications.
• Data interoperability: Minimum requirements ensuring ERT/ERR can exchange the identifier and, optionally, additional vehicle-related data.
• Air interface requirement: Implementations must use an air interface standardized at an international, regional or national level with publicly available protocols (the standard does not define the air interface itself).
• Security scope: Designed for moderate security levels appropriate to data already available manually; high‑security administrative needs are referred to ISO/TS 24534‑4 and ISO/TS 24534‑5.
• Operational and installation considerations: Environmental, safety, installation, operational parameters, tamper‑detectable feature (optional).
• Conformance and testing: Compliance requires certification by an Accredited Independent Testing Body (AIB) approved by the relevant nation state.

Practical applications and users

ISO 24535:2007 is aimed at practitioners needing a simple, interoperable means of automatic vehicle identification:

• Road traffic authorities and vehicle registration agencies (basic electronic IDs, vignettes, compliance marking)
• Tolling and parking operators seeking simple vehicle presence/ID
• ITS integrators and system vendors implementing low‑cost ERT/ERR deployments
• Vehicle manufacturers fitting basic ERTs as an enabling technology
• Agencies using ERI to support vehicle end‑of‑life processes or enforcement where high security is not required

Benefits include reduced manual processing, faster roadside verification, improved traffic management and crime reduction through reliable unique vehicle identification.

Related standards

• ISO/TS 24534‑1, ‑2, ‑3, ‑4, ‑5 (ERI architecture, operational requirements, vehicle data, secure communications)
• ISO 14815, ISO 14816 (AVEI system specs and data structures)
• ISO/IEC 8825‑2; IEC 60215; EN 300 220; EN 301 489; FCC Part 15; ARIB T75 (radio/encoding and regulatory references)

Keywords: ISO 24535:2007, basic ERI, electronic registration identification, automatic vehicle identification, intelligent transport systems, ERT, ERR, vehicle identifier, air interface, interoperability, ITS.