TachoView

A clean-room viewer for EU smart tachograph DDD files (Vehicle Unit and driver / workshop / control / company card downloads, Gen 1 and Gen 2 / G2v2).

Parsing follows the public binary layout of Commission Regulation (EU) 2016/799 (Annex 1C). Signatures are not verified — the viewer trusts the file as supplied.

• Drag a .ddd onto the home page (or click to browse).
• Activities are shown as per-day Gantt strips, driver vs co-driver.
• Detailed speed is plotted second-by-second.