The tachograph digitally records various types of driver and vehicle data such as journey distance, speed, driving time and driver’s activity.
The data is stored in the vehicle unit memory and on driver cards.
The leading European tachograph brands are VDO (Siemens), Stoneridge, Intellic and Actia.
Source: https://fleetgo.com/tachograph/what-is-a-digital-tachograph/
The presented opinions are the views of the STEP AHEAD II project partnership and do not have to express the opinions of the EU.