Plus tard cette année, tous les véhicules nouvellement immatriculés seront équipés d'un tachygraphe intelligent de deuxième génération version 2 (G2V2). Bientôt, le remplacement des tachygraphes sera également obligatoire dans les véhicules plus anciens circulant dans le transport international 
Currently, vehicles are fitted with gen 1 smart tachographs, but from this August it will be mandatory to install version 2 second-generation smart tachograph (G2V2).
G2V2 tachograph is equipped with a GNSS tracker and requires the use of the OSNMA service to authorize the GNSS position recorded by the tachograph 
At the moment, OSNMA is not available yet and for this reason, the European Commission decided to launch 'transitional tachographs'.
More about the topic you can find in INELO article 