Complete guide

Digital tachograph: how to correctly download, evaluate and archive data

Truck Data TechnologyUpdated April 20268 min read

If you own a truck, a bus — or from July 2026 a van over 2.5 t in international transport — a digital tachograph is or will be an essential part of your working life. Whether you drive yourself or manage a fleet, there are several obligations you need to get right.

days — driver card
28

Driver card data must be downloaded at least every 28 days. TAGRA alerts you before deadlines expire.

days — vehicle unit
90

Vehicle unit data must be downloaded at least every 90 days. All data must then be archived for a minimum of 1 year.

Legal minimum
12 months

Minimum retention required by law.

Recommended
2–5 years

it pays to have everything available for retrospective inspections.

Regular duties

What you must do regularly

Downloading, correctly evaluating and archiving data gives you:

  • peace of mind during inspections,
  • protection for your business,
  • and above all, saved time and nerves.
  • In the most serious cases during a roadside check — such as tampering with a tachograph or deliberate falsification — a security deposit of up to €8,000 may be imposed on the spot.
01

Download data from the tachograph

At least every 90 days.

02

Download data from the driver card

At least every 28 days.

03

Evaluate the data

Check that driving times, breaks and rest periods comply with the law.

04

Archive the data

For at least 1 year (we recommend 3–5 years).

05

Keep the tachograph calibrated

Regular calibration at an authorised workshop is mandatory.

Legal deadlines

Legal deadlines you must meet

days — driver card

28

Driver card data must be downloaded at least every 28 days. TAGRA alerts you before deadlines expire.

days — vehicle unit

90

Vehicle unit data must be downloaded at least every 90 days. All data must then be archived for a minimum of 1 year.

TRUCKMALL tip

Even though the law requires only 1 year of archiving, we recommend keeping data for at least 3 years — to be on the safe side in case disputes arise later.

Common mistake

Why downloading alone is not enough

Many operators assume that simply downloading data is sufficient. It is not. The law requires you to also regularly evaluate the data — checking driving times, breaks and rest periods — and to archive it. Inspectors check for evaluation, not just the existence of downloaded files.

Practical workflow

How to comply in practice

Step 1 — Download

Device for downloading data

Use the Download Box II S for manual downloading from the vehicle tachograph and driver cards.

Step 2 — Evaluate

Software for evaluation

TAGRA shows violations, driving times and rest periods in a few clicks. Reports accepted by inspectors.

Step 3 — Archive

Archiving

TAGRA archives everything automatically — secure and always accessible for any inspection.

Not sure which solution is right for you? Contact us — we'll be happy to advise.

Archiving

Archiving: law and practice

  • Legal minimum: 12 months.
  • Recommended: 2–5 years — it pays to have everything available for retrospective inspections.
Equipment

G2V2 smart tachographs

Since 2023, all new vehicles must be fitted with second-generation smart tachographs (G2V2). All current Download Box devices and TAGRA software are fully compatible with G2V2 tachographs.

New from July 2026

From July 2026: vans in international transport

In force now

From 1 July 2026 the obligation also covers vans of 2.5–3.5 t

An important legislative change will affect operators of smaller vehicles. From 1 July 2026, the obligation to use a tachograph extends to vans and combinations with a gross weight of 2.5–3.5 t when used in international transport for hire or reward or for cabotage. TAGRA is fully ready for this obligation. Read the full guide →

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Questions & answers

Frequently asked questions

How often must tachograph and driver card data be downloaded?

Driver card data at least every 28 days, vehicle unit data at least every 90 days. We recommend downloading more frequently — for example every 10 and 30 days — to maintain a safety margin.

Is downloading the data enough, or must I also evaluate it?

Downloading alone is not enough. The law requires regular evaluation — checking driving times, breaks and rest periods. Without evaluation you have no visibility of violations and risk a fine. TAGRA handles this automatically.

What do I need to download data from the tachograph?

A download device (such as the Download Box II S), a company card inserted in the tachograph, and TAGRA software for evaluation and archiving.

How long must tachograph data be archived?

At least 1 year by law. We recommend 3–5 years. TAGRA archives data automatically.

Does the equipment support G2V2 smart tachographs?

Yes. All current Download Box devices and TAGRA are fully compatible with second-generation smart tachographs (G2V2).