Abstract
Keywords: digital tachograpoh, card, calibration.
Tachograph is belong to On Board Recording Devices. Their development have been beginning since before The Second World War. The first on board recording devices is analog tachograph which obligatory to using to introduce in USA in 1939. This paper include main rules of function of analog tachograph and digital tachographs system using in road transport in European Union. Paper presents also possibility of future requirements of digital tachograph and authorize workshops in Poland and Union Europe base on Commission Regulation (EC) No 1360/2002 of 13 June 2002 replacing the Annex 1B.