jackson619:
your digi card only holds 28 days
As others have said its a MINIMUM of 28 days. Look at it this way if you tramp all week and leave your card in for five days it will record 5 times 24 hours, if a guy doing days inserts and removes it every day and does 10 hours shifts, he will have space to have a lot more days accumulated on it.
The bare minimum a card will actually hold has to be 28 times 24 hours. If you’re doing 12 hour shifts (for example) it will hold 56 shifts (minimum).
Mike-C:
The bare minimum a card will actually hold has to be 28 times 24 hours. If you’re doing 12 hour shifts (for example) it will hold 56 shifts (minimum).
That is not my understanding of how they work. I assume that you are working on the basis that each hour of use is being recorded separately which, in computer terms, is unnecessary (and wasteful of memory). All that needs to be recorded are activity changes. i.s. Stopping/starting, change of mode, etc. Hence for someone on Trunking/Tramping, RDC work, the card would fill up considerably slower than for someone on multi-drop.
And to answer an earlier question, in general, for Summary Offences, the ‘limitation of proceedings’ is six months. The most notable exception being Insurance offences where the limitation of proceedings is six months from the date of the discovery of the offence.
To clear a few points up;
Statute Barred for hours offences is 6 months. However, a pattern of offences that is older than that could be drawn to the attention of the TC, especially if they are reoccurring. Hence, one of the reasons charts / records have to be kept for 12 months.
False records; stat bar is two years.
Digital tacho cards were designed to hold 28 average days of activity. An ‘average day’ consists of 93 activity changes, most of you will get nowhere near that figure. If your ‘working day’ has fewer than 93 activity changes then you will have more ‘working days’ stored on your card. If your ‘working day’ has more than 93 activity changes, then you will have fewer than 28 days stored on your card. The vehicle unit works in a similar way, although it deals with 365 average days and 256 is the activity change number it looks for, remember, VU’s may have to deal with a multi-manned journey or double / triple shifts, a driver card doesn’t… So far the record goes to a driver involved in trunking work, 333 ‘working days’ on his card 
ok i stand corrected. 
Mike-C:
jackson619:
your digi card only holds 28 daysAs others have said its a MINIMUM of 28 days. Look at it this way if you tramp all week and leave your card in for five days it will record 5 times 24 hours, if a guy doing days inserts and removes it every day and does 10 hours shifts, he will have space to have a lot more days accumulated on it.
The bare minimum a card will actually hold has to be 28 times 24 hours. If you’re doing 12 hour shifts (for example) it will hold 56 shifts (minimum).
i counted 164 days on my card going back over10 months
205:
i counted 164 days on my card going back over10 months
That’s good because this thread goes back over 28 months 
It has been a common misconception that the digital card will only hold a months data. I think GeeBee45 said they found one with over 12 months readable data and my own was showing almost that.
my card is used 5 nights a week and holds 10 months data…it seems to overwrite itself at exactly 10 months.