User guide

Definitions126 EFAS

Tachograph card

This is the chip card used for digital tachograph

identification. There are four different types of tacho

graph cards: 

* driver card, 

* company card, 

* workshop card and 

* control card.

T-Symbol

The T-symbol is a signal lamp that is located nor-

mally in the instrument cluster respectively the

speedometer of the vehicle. The signal lamp is

switched on by the tachograph when the user has to

confirm an event or fault message signalled on the

tachograph display or if a user handling is required

by the tachograph.

UTC

Abbreviation of universal time coordinated. This

refers to a coordinated world time, or universal

worldwide time scale, based on the atomic second.

A constant and the DST time offset is added to or

deducted from UTC to determine local time in a par

ticular time zone.

The denotation „vehicle unit“ (VU) means the re-

cording equiment (the tachograph device) of the

vehicle without the motion sensor.

Workshop card

The workshop card is a tachograph card which is

issued to authorised digital tachograph manu

facturers, installers, vehicle manufacturers or work-

shops of a member state by this member state’s

authorities. The workshop card identifies the card

holder and enables inspection, calibration and

downloading of digital tachograph data.