Interoperability Laboratory

Interoperability activities

The Digital Tachograph Laboratory (DTLab) is the single laboratory under the authority and responsibility of the European Commission in charge to perform the Interoperability certification, as specified by the requirement 278 of the regulation EU 1360/2002 (the so-called Annex 1B) and requirement 440 of the regulation EU 799/2016 (the so-called Annex 1C).

The interoperability certification is one of the three certifications required for type approval of digital or smart tachograph components.

The other two certifications concern the functional testing, and the security evaluation.

As specified by the regulations, the type approval certificate shall be copied by the type approval authority to the laboratory in charge of the interoperability tests at the time of deliverance to the manufacturer.


Communications regarding Interoperability activities (Test request, new manufacturer codes...) must be addressed to:

or by mail to:

Digital Tachograph Laboratory
Head of the Cyber & Digital Citizens' Security Unit
Directorate E
Joint Research Centre (TP 580)
European Commission
Via Enrico Fermi, 2749
I-21027 Ispra (VA)

Interoperability Test Request Procedure

1. Communication of the request to:

DTLab informs of the possible schedule for the Certification activities.

2. Emission of a Service Contract:
* Official request received by DTLab
* Preparation of a quotation and draft of the Service Contract.
* Acceptation of the quotation
* Preparation of the Service Contract
* Signature of the Service Contract.

3. Reception of the specimen(s) and related documentation:
* Functional Certificate
* Security Certificate

* Requested number of specimen to be tested.

4. Testing of the specimen(s)

5. Preparation of the final report and of the IOT Certificate.

Maintenance Test on Type Approved Devices

Completing interoperability test

This procedure allows performing complete interoperability tests on Digital Tachograph devices which have been already tested in the DTLab. Devices which have already a type approval certificate.
These tests are referred to an existing Interoperability Certificate.

At test successfully completed, an attestation is delivered to confirm the validity of the Interoperability Certificate in refererence

Steps to be followed:

As above until step 4.

5. Preparation of the attestation.

Test specification Documentation

Digital Tachograph Interoperability

Click on one of the following documents to be downloaded:

pdf Interoperability Test Specification - Vers. 2.3 - JRC S & T Reports - 2012 - [PDF-366KB]

zipInteroperability Test Keys - Version 15 - [ZIP-1.3 MB] - Updated by 16/05/2017

Smart Tachograph Interoperability

Click on the following document to be downloaded:

pdf Smart Tachograph version 2 Components Interoperability Test Specification Version 1.10 - [PDF-1.27MB] - Updated by 08/04/2022

pdf Smart Tachograph version 1 Components Interoperability Test Specification Version 1.00 - [PDF-1.20MB] - Updated by 25/07/2018

zipSmart Tachograph Interoperability Test (IOT) - Root Certificates - [ZIP-10KB]