A driver who operates both vehicles with digital tachographs and older vehicles with analogue tachographs during a 56-day period is stopped for a roadside check in Austria. What must the driver present to the enforcement officer?

1. Their digital driver card AND any analogue tachograph chart discs (Schaublätter) used during the 56-day period, plus any manual printouts or records
2. Only the digital driver card, because digital data automatically overwrites analogue paper discs
3. Only the analogue discs from the last 7 days
4. A written statement from their employer explaining the mixed vehicle fleet