
Many companies are currently focused on whether they will need a tachograph. But once that question is answered, the next one follows: what do I do with all the data the device collects?
Installing a tachograph is one thing. Reading the data on time, storing it securely and having it ready for inspection – that obligation only truly begins after installation.
In this article, you'll learn how often you need to download data, what inspectors check and how to manage it efficiently. Especially relevant if your company will fall under the new tachograph rules.
The driver card is a driver's personal card. Every time you drive a vehicle fitted with a digital tachograph, the card records activities: driving times, rest periods, breaks and working hours. The card is personal – every driver has their own. As an employer, you are responsible for downloading that data on time.
Downloading is not optional. It is a legal obligation set out in European legislation. If the tachograph rules apply to your company, you are required as an employer to read and store the data on a regular basis.
The deadlines are set by law:
Driver card: at least every 28 days
Data on the driver card is overwritten after a period of time. If you read too late, data is permanently lost. This is not only a compliance problem – it also makes it impossible to prove after the fact that everything was in order during an inspection.
Tachograph mass memory: at least every 90 days
In addition to the driver card, the tachograph itself stores data in its mass memory. This data must be downloaded at least once every 90 days.
Data retention: at least 1 year
All downloaded data must be retained for at least twelve months and be available during a company inspection. Depending on other regulations – such as tax obligations – a longer retention period may apply.
If you have multiple vehicles and drivers, the number of required read-outs adds up quickly. Five vehicles means five mass memories that need to be downloaded every 90 days, plus the driver cards of all your drivers every month.
The relevant inspection authority carries out both roadside checks and company inspections. These serve different purposes.
During a roadside check, inspectors use a control card to review a driver's driving and rest times. The driver must be able to show data from the current day and the previous 56 days.
During a company inspection, the authority checks whether you as an employer are complying with your download and retention obligations:
What many companies don't know: an inspector can use their control card to look back up to 365 days into tachograph data. Power supply interruptions and attempted tampering are all traceable within that data.
Downloading too late can have direct consequences for your administration, your vehicles and your operating licence. During an inspection – on the road or during a company visit – the authority can issue fines for every violation it finds.
If your vehicle falls under the tachograph rules and you don't have a working tachograph or a complete set of records, you risk a fine. In the most serious cases, you could lose your transport licence altogether.
The downloading process itself takes time. But the bigger challenge is the administration: who keeps track of when each driver card was last read? Who monitors the 90-day deadline for each individual vehicle? With one vehicle and one driver, this is still manageable. As your fleet grows, manual tracking becomes a structural risk.
Ask yourself these questions:
If you answered yes to any of these, automated downloading is worth considering.
With an automated download solution, the driver card and mass memory are read remotely and automatically. As soon as the vehicle connects, the data is immediately stored securely in the cloud.
This gives you three things:
Until now, the tachograph obligation applied to vehicles over 3,500 kg. From 1 July 2026, a new European requirement takes effect: the Smart Tacho 2 becomes mandatory for light commercial vehicles between 2,500 and 3,500 kg that operate internationally or carry out cabotage (transport within another EU country).
This means thousands of companies will be subject to tachograph rules for the first time – and therefore also to the download obligation. For many of them, this is entirely new territory. They don't know the deadlines, haven't set up any processes and don't know what software they need.
The challenge isn't just installing the tachograph. The challenge is systematically managing the data that device collects every single day afterwards. Our advice: get this in order before 1 July.
Installing a tachograph is step one. But the obligation doesn't stop there. Anyone who fails to monitor download deadlines and retain data is not complying with the law. That applies to companies that have been subject to tachograph rules for years – and from 1 July 2026, it will also apply to the new group joining them.
Getting control of your tachograph data starts with a working download process. Automated, reliable and always compliant.
Disclaimer: Legislation surrounding tachographs is subject to change. This article reflects the situation as of April 2026. No rights can be derived from the content of this article. For your specific situation, always consult a specialist or refer to the most up-to-date information from the relevant inspection authority.