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Tachograph — the speed recorder on the bus

The tachograph — cards, symbols, checks and faults

2026-10-06·14 min reading

The tachograph (tachometer) is the bus's black box: it records driving time, breaks, rest and speed and is used by the authorities for inspection. Here are the rules, cards and errors that cost fines.

Introduction

All buses designed to carry more than 9 people, including the driver, and subject to driving/rest time regulations (Regulation (EC) 561/2006), must have a tachograph (speed recorder). It records driving time, breaks, daily rest, and speed, and is the central control tool for the Road Directorate and the police.

Digital vs. analog tachograph

TypeRecordingShort / media
Analog (older)Discs (tachograph discs) — record curve on paperPaper disc — removed and stored
Digital (standard)Data on tachograph card and in the unit's memoryDriver's card (personal chip card)
Smart tachograph v2Automatic GNSS Position + Remote Readout via DSRCDriver's card — new generation

New buses registered in the EU must have smart tachograph (version 2) acc. Regulation (EU) 165/2014 with continuous amendments. Smart tachograph v2 automatically registers GPS position and makes it possible for roadside inspection to read data wirelessly (DSRC) without stopping the vehicle.

The cards

  • 01Driver card (personal) — inserted into the tachograph at the start; records the driver's activities. Valid for at most 5 years; issued by the Danish Road Traffic Authority.
  • 02Company card — haulier/operator's card; provides access to company data in the tachograph.
  • 03Control/authority card — used by police and the Danish Road Directorate for roadside inspections.
  • 04Workshop card — calibration and service; only approved workshops.

What is inspected?

  • 01Compliance with the 4.5-hour limit and 45-minute break.
  • 02Daily and weekly driving time (9/10 hours, 56 hours/week, 90 hours/2 weeks).
  • 03Daily and weekly rest (11/9 hours; 45/24 hours).
  • 04Missing activities — periods without registration must be explained (e.g. ferry rest outside cab).
  • 05Calibration certificate: the tachograph must be calibrated every 2 years or when changing tyres/bodywork.

Manual entry at start and end

When you insert your driver's card at the start of the day, the tachograph asks whether you want to record activities for the period since the card was last removed (e.g. rest, ferry, other work). You must also enter the country symbol — the country you start and end the drive in. If the drive is not covered by the rules (e.g. private driving or driving under the 50 km exemption), you put the tachograph in »out of scope« (OUT). If you forget the country symbol or manual entry, periods appear unexplained during inspection.

Activity symbols

SymbolActivityCounts as
RatDrivingTravel time (automatic when the bus is running)
Crossed hammersOther workWork time — not break
Square with linesAvailability timeCan count as break/rest under conditions
Bed / horizontal lineBreak and restResets the 4.5-hour clock
SymbolActivity & what it counts asDrivingKøretid — automatisk når bussen kørerOther workArbejdstid — tæller IKKE som pauseAvailability timeKan tælle som pause/hvil på betingelserPause & hvilNULSTILLER 4,5-timers-uretOnly driving is recorded automatically — the others are switched manually on the tachograph
Fig. The tachograph's four activity symbols — only rest/sleep resets the 4.5-hour clock

The four cards

CardUserValidityIssuer
Driver card (taxi)Each driver (personally)Up to 5 yearsRoad Authority
Business cardHaulier/operatorStated on the cardRoad Authority
Workshop cardApproved tachograph workshopAt most 1 yearRoad Authority
Control cardPolice and Road DirectorateStated on the cardRoad Authority

New card, renewal and price

  • 01You can apply for renewal no earlier than two months before the card's expiry date. The Danish Road Traffic Authority recommends applying no later than 15 days before if you want to be sure of having the new card before the old one expires.
  • 02A tachograph card costs DKK 350.
  • 03If the driver card is damaged, lost or stolen, you must apply for a new one within seven calendar days. The authority issues a replacement card no later than eight working days after receiving a reasoned application (165/2014, Art. 29(4)).
  • 04If you can document that you cannot use the card, you may drive without a driver card for at most 15 calendar days — or longer if necessary to get the bus back to base (Art. 29(5)).

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