ISO 4426:2021

Intelligent transport systems — Lower layer protocols for usage in the European digital tachograph ISO 4426:2021

Publication date:   Aug 3, 2021

General information

90.20   Standard under periodical review   Jul 15, 2026

ISO

ISO/TC 204 Intelligent transport systems

International Standard

35.240.60   IT applications in transport | 03.220.20   Road transport

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Scope

This document specifies communication requirements in support of the Smart Digital Tachograph (SDT) as identified by Regulation 2016/799 of the European Union[23].
The specification covers:
—    the physical layer at 5,8 GHz for SDT communications (SDTC);
—    the data link layer (DLL) of SDTC;
—    the application layer of SDTC;
—    SDTC profiles which provide coherent sets of communication tools for applications based on SDTC.
This document provides further information beneficial for the design and development of SDTC equipment.

Life cycle

NOW

PUBLISHED
ISO 4426:2021
90.20 Standard under periodical review
Jul 15, 2026




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