3 ptsD,D1Official number: 7852
For how long are you allowed to use the record sheets?

Explanation
Correct answer: For a period not longer than that for which it is intended.
The record sheet shown in the picture, i.e., an analogue tachograph disc, has a clearly marked time scale covering 24 hours. This means that it is intended for recording the driver's activity over a period of one day. In accordance with the regulations, a driver may not use a single record sheet for longer than the period for which it is intended.