How to Open Digital Tachograph Files

Decompress, decode, and visualize DDD and TGD data in PDF format

Digital tachograph files contain mission-critical data regarding driver shifts and vehicle logistics. However, because they are encrypted for legal integrity, they cannot be opened with standard software like Excel or Word. If you have a file you cannot read, you need a specialized DDD/TGD parser.

In this guide, we provide the solution to open digital tachograph files safely, allowing you to decompress technical metadata into readable reports.

Software interface for opening and decompressing digital tachograph files

Why Tachograph Files Won't Open

Format standards like .DDD, .TGD, .V1B, and .C1B are binary-coded. This design is intentional to comply with EU digital signature laws, ensuring that:

Encrypted Data

Protects against unauthorized tampering or driver record modification.

Legal Validity

Ensures the file stands as admissible evidence in labor courts.

Binary Structure

Requires a decoder to translate hex values into timestamps.

Step-by-Step: Opening and Decompressing Files

Many files downloaded from remote systems or download keys arrive as compressed ZIP/GZ containers. Here is how to handle them:

  1. Upload: Drag your raw file into the TachoTools cloud parser.
  2. Auto-Decompression: Our system detects if the file is a .ddd or a .tgd and decompresses the internal blocks automatically.
  3. Visualization: Choose between a Live Dashboard or a static PDF export.

Convert Tachograph Files to PDF

Converting to PDF is the industry standard for sharing records with lawyers, consultants, or transport inspectors. It provides:

  • Clear Timelines: A visual breakdown of driving and rest cycles.
  • Audit-Ready Reports: Professional tachograph PDF reports that highlight violations.
  • Data Sharing: Easily send documentation via email for official inspections.

Scalable Solutions: API and Bulk Management

For transport companies and logistics operators, opening one file at a time is inefficient. TachoTools offers advanced features for professional management:

  • Bulk File Uploads: Process hundreds of .DDD files simultaneously.
  • API Integration: Connect your own ERP or Fleet Management Software to our decoding engine.
  • Historical Archive: Secure storage that meets the mandatory 365-day legal custody requirement.

Explore our flexible plans to find the right fit for your fleet size.

Ready to View Your Data?

Don't let binary files slow down your operation. Open, analyze, and secure your tachograph data in seconds.

Compatible with Smart Tachograph Gen1 & Gen2 formats