ISO 4426:2021

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

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.