If a bus driver's digital driver card is damaged, malfunctions, or is lost/stolen during an international coach tour, for how long may the driver legally continue driving without a card, and what must they do?

1. The driver may continue driving for a maximum period of 15 calendar days (or longer if necessary for the vehicle to return to its base), provided they produce daily printouts and report the loss/theft to competent authorities immediately
2. The driver must immediately abandon the bus at the roadside and cannot drive for a single minute
3. The driver may drive without a card for up to 6 months with no paperwork
4. The driver can photocopy a colleague's driver card and tape it over the slot