During a roadside inspection by the Austrian Police or ASFINAG, what happens if an enforcement officer detects a 'Motion Sensor Conflict' (Bewegungssensorkonflikt) or 'Hardware Tampering' event stored in the tachograph mass memory?

1. The officer awards a bonus fuel voucher to the driver
2. The vehicle is directed to an authorized calibration workshop for inspection; if illegal manipulation devices (magnets, software hacks, duplicate cards) are found, the vehicle is immobilized, heavy fines are levied, and criminal proceedings are initiated
3. The officer simply presses 'Delete' on the tachograph screen
4. The driver is allowed to continue after promising not to do it again