Tachograph download deadlines explained: the 28 & 90 day rule
The two deadlines that matter
| What | Download at least every | Keep for |
|---|---|---|
| Driver card | 28 days | 12 months |
| Vehicle unit (VU) | 90 days | 12 months |
These are maximum intervals, not targets. Sensible operators download more often — a driver card every couple of weeks — so a forgotten download never tips over the 28-day line.
Why the deadlines exist
Digital tachographs store a finite amount of data before older records are overwritten. Downloading on time preserves a complete record of drivers' hours and vehicle use — the evidence you need to manage infringements and prove compliance during a DVSA operator visit.
What happens if you miss one?
- Data loss — records can be overwritten and gone for good.
- Gaps in your records — which read as poor control of drivers' hours.
- Infringements missed — you can't act on what you didn't download.
- Worse standing with DVSA — part of the picture that affects your compliance score.
The 28 and 90 day limits are easy to hit when someone owns them — and easy to miss when nobody does. A reminder is worth more than a spreadsheet.
Never miss a download deadline
Raahi tracks each driver card and vehicle unit and reminds you before the 28 and 90 day deadlines — alongside MOT, PMI, tax, CPC and O-licence dates.
See O-licence compliance software →How often must you download a driver's tachograph card?
At least every 28 days in the UK. More often is safer.
How often must you download the vehicle unit?
At least every 90 days; keep the data for at least 12 months.
What happens if you miss a deadline?
Risk of data loss, record gaps, missed infringements and worse DVSA standing.
General information, not legal advice — always refer to current DVSA and DVSA/GV guidance for the definitive rules.