If a driver's digital tachograph card is damaged, malfunctions, or is lost/stolen during a journey, what procedure must be followed and for how long may they continue driving?

1. They must immediately abandon the vehicle on the roadway until a new card arrives
2. They may drive indefinitely by keeping informal handwritten notes in a personal notebook
3. They can drive for up to 30 days without any printout requirements
4. They must produce daily printouts from the tachograph at the start and end of the journey, recording details manually, and may continue driving for a maximum of 15 calendar days