Czech Metrology Institute  
Okružní 31, 638 00 Brno  
 
Executive summary for the EC (not part of this legislation)  
Recording equipment in road transport adapted to technical progress is placed on the market and put 
into service in the Czech Republic in accordance with Regulation (EU) No  165/2014 of the Europea n 
Parliament and of the Council on tachographs in road transport.  
The purpose of the draft which is the subject of this notification is to establish metrological and 
technical requirements arising from Regulation (EU) No  165/2014 of the European Parliament  and of 
the Council on tachographs in road transport – digital tachographs in vehicles and methods for their 
verification within specified time limits.This draft only concerns the verification of digital 
tachographs in use since type approval of these inst ruments in the Czech Republic is not relevant.  
Some of the parameters referred to in this document are properties of measuring instruments in new 
condition and are only noted here because the preservation of these properties when in use is only 
subject to visual or other checks within the scope of verification.  
(End of executive summary.)  
 
1. ------IND- 2017 0009 CZ - EN- ------ 20170130 --- --- PROJET 
 
 
REF. no:0313/016/15/Pos.  
Contact person:  Mgr.Tomáš Hendrych  
Phone:  +420 545 555 414 
 
P U B L I C  D E C R E E  
 
As th e authority with substantive and territorial jurisdiction in the matter of laying down metrological 
and technical requirements for legally controlled measuring instruments and laying down the methods 
for type approval and verification of legally controlled  measuring instruments under §  14(1) of Act 
No 505/1990 on metrology, as amended (hereinafter the 'Metrology Act'), and in accordance with the 
provisions of §  172 et seq. of Act No  500/2004, the Administrative Procedure Code (hereinafter the 
'APC'), the Cz ech Metrology Institute (hereinafter the 'CMI') commenced ex officio proceedings on 
11.12.2015 pursuant to §  46 of the APC, and, based on the supporting documents, issues the following:  
 
 
I. 
D R A F T  G E N E R A L  M E A S U R E 
number:  0111 -OOP -C062 -15 
ref. no.0313/016/1 5/Pos.,  
 
 Draft Measure No  0111 -OOP -C062 -15 
2 laying down metrological and technical requirements for legally controlled measuring 
instruments, including the testing methods for the verification of legally controlled 
measuring instruments:  
‘tachographs recording the work activities of driver s of motor vehiclescompulsorily 
equipped with these tachographs – digital tachographs’  
This General Measure lays down the metrological and technical requirements for tachographs 
recording the work activities of drivers of motor vehicles compulsorily equipp ed with these 
tachographs – digital tachographs, to be applied when verifying these instruments after they have been 
placed on the market or put into service.These requirements comply with the requirements of:  
Annex  1B to Council Regulation (EEC) No  3821/8 5 of 20  December  1985 on recording equipment in 
road transport, as amended.  
Regulation (EC) No  561/2006 of the European Parliament and of the Council of 15  March  2006 on the 
harmonisation of certain social legislation relating to road transport (hereinafte r ‘Regulation (EC) 
No 561/2006 of the European Parliament and of the Council’);  
Regulation (EU) No  165/2014 of the European Parliament and of the Council of 4  February  2014 on 
tachographs in road transport (hereinafter ‘Regulation (E U) No 165/2014 of the E uropean Parliament 
and of the Council’),  
Commission Implementing Regulation (EU) 2016/799 of 18  March  2016 implementing Regulation 
(EU) No  165/2014 of the European Parliament and of the Council laying down the requirements for 
the construction, testing, in stallation, operation and repair of tachographs and their components.  
1 Basic definitions  
For the purposes of this General Measure, the terms and definitions according to VIM and VIML11), 
the relevant EU regulations referred to above and the terms and defi nitions below shall apply.  
1.1 
tachograph or recording equipment   
means the equipment intended for installation in road vehicles to display, record, print, store and 
output automatically or semi -automatically details of the movement, including the speed, o f such 
vehicles, and details of certain periods of activity of their drivers  
1.2 
vehicle unit   
means the tachograph excluding the motion sensor and the cables connecting the motion sensor . The 
vehicle unit may be a single unit or several units distributed in the vehicle, provided that it complies 
with the security requirements of Regulation (EU) No  165/2014 of the European Parliament and of the 
Council;the vehicle unit includes, among other things, a processing unit, a data memory, a time 
measurement functi on, two smart card interface devices for driver and co -driver, a printer, a display, 
connectors and facilities for entering the user’s inputs  
1.3 
motion sensor   
means a part of the tachograph providing a signal representative of vehicle speed and/or distan ce 
travelled  
                                                      
1) International Vocabulary of Metrology – Basic and General Concepts and Associated Terms (VIM) and 
International Vocabulary of Terms in Legal Metrology (VIML) are part of the technical harmonisation 
compendium ‘Terminology in the Area of Metrology’, which is publicly accessible at www.unmz.cz  Draft General Measure No  0111 -OOP -C062 -15 
3 1.4 
digital tachograph (hereinafter also DT)   
means a tachograph using a tachograph card  
1.5 
adaptor   
means a part of the recording equipment, which provides a signal permanently representative of 
vehicle speed and/or distance travelled and wh ich is installed and used only in M1 and N1 vehicles 
where it is not mechanically possible to install any other type of existing motion sensor. For those 
vehicles, the recording equipment includes cables, an adaptor, and a vehicle unit  
1.6 
tachograph card   
means a smart card intended for use with the tachograph, which allows identification by the 
tachograph of the role of the cardholder and allows data transfer and storage  
1.7 
driver card   
means a tachograph card, issued by the authorities of a Member State  to a particular driver;the driver 
card identifies the driver and allows for storage of driver activity data  
1.8 
control card   
means a tachograph card issued by the authorities of a Member State to a national competent control 
authority which identifies th e control body and, optionally, the control officer, and which allows 
access to the data stored in the data memory or in the driver cards and, optionally, in the workshop 
cards for reading, printing or downloading  
1.9 
workshop card   
means a tachograph card  issued by the authorities of a Member State to designated staff of a 
tachograph manufacturer, a fitter, a vehicle manufacturer or a workshop, approved by that Member 
State, which identifies the cardholder and allows for the testing, calibration and activa tion of 
tachographs, or downloading of data from them (hereinafter also referred to as the ‘service card’)  
1.10 
company card   
means a tachograph card issued by the authorities of a Member State to a transport undertaking 
needing to operate vehicles fitted with a tachograph, which identifies the transport undertaking and 
allows for the displaying, downloading and printing of the data stored in the tachograph, which have 
been locked by that transport undertaking  
1.11 
tachograph constant   
the numerical charact eristic giving the value of the input signal required to show and record a distance 
travelled of one kilometre;this constant is expressed in impulses per kilometre ( k =... imp/km)  
1.12 
characteristic coefficient of the vehicle W (hereinafter also referred to as ‘vehicle constant’)  
means the numerical characteristic giving the value of the output signal emitted by the part of the 
vehicle linking it with the recording equipment (gearbox output shaft or axle) while the vehicle travels 
a distance of one kilomet re under standard test conditions. The characteristic coefficient is expressed 
in impulses per kilometre ( W = ... imp/km)  
1.13 
tyre size   Draft Measure No  0111 -OOP -C062 -15 
4 means the designation of the dimensions of the tyres (external driving wheels) in accordance with 
Directive 92/23/EEC of 31  March  1992  
1.14 
effective circumference of the wheel tyres   
means the average of the distances travelled by each of the wheels moving the vehicle (driving 
wheels) in the course of one complete rotation. These distances are measured under standard tes t 
conditions and are expressed in the form: l = … mm 
1.15 
UTC   
coordinated universal time;  this is not affected by switching between summer and winter time  
1.16 
tachograph activation   
means the phase in which the tachograph becomes fully operational and im plements all functions, 
including security functions. Activating a recording equipment requires the use of a workshop card 
and the entry of its PIN code  
1.17 
tachograph calibration   
means updating or confirming vehicle parameters, including vehicle identif ication and vehicle 
characteristics, to be held in the data memory through the use of a workshop card  
1.18 
tachograph verification   
comprises all activities necessary to confirm compliance of the recording equipment installed in a 
vehicle with the requirem ents specified in the relevant regulations  
1.19 
data memory   
means electronic equipment for storing data, which is built in to the tachograph  
1.20 
printer   
means component of the recording equipment which provides printouts of stored data  
1.21 
downloading from a digital tachograph   
means the copying, together with the digital signature, of a part, or of a complete set, of data files 
recorded in the data memory of the vehicle unit or in the memory of a tachograph card, provided that 
this process does not alt er or delete any stored data  
1.22 
event   
means abnormal operation detected by the recording equipment which may come from a fraud attempt  
1.23 
fault   
means abnormal operation detected by the recording equipment which may come from an equipment 
malfunction or failure  
1.24 
over speeding   
means exceeding the authorised speed of the vehicle, defined as any period of more than 60  sec during 
which the vehicle’s measured speed exceeds the limit for setting the speed limitation device  Draft General Measure No  0111 -OOP -C062 -15 
5 1.25 
speed limitation device   
means a device limiting the maximum speed of a vehicle  
1.26 
repair   
means any repair of a motion sensor or of a vehicle unit that requires the disconnection of its power 
supply, or its disconnection from other tachograph components, or the opening of the m otion sensor or 
vehicle unit  
1.27 
interface   
means a facility between systems which provides the media through which they can connect and 
interact  
1.28 
installation   
means the mounting of a tachograph in a vehicle  
1.29 
self test   
means tests run cyclically  and automatically by the recording equipment to detect faults  
2 Metrological requirements  
The metrological requirements are based on the requirements under Annex  1B to Council Regulation 
(EEC ) No 3821/85 and Regulation (EU) No  165/2014 of the European Par liament and of the Council.  
2.1 Rated operating conditions  
The tachograph shall work properly in an ambient temperature range of -20 °C to 70  °C. 
The data memory of the tachograph shall be preserved at temperatures down to -40 °C. 
The ambient temperature r ange for the motion sensor shall be -40 °C to 135  °C. 
Speedometers shall not be sensitive to relative ambient humidity.  
The tachograph shall be fully operational in the humidity range 10  % to 90  %. 
The recording equipment shall be protected against over -voltage, inversion of its power supply 
polarity, and short circuits.  
The tachograph shall conform to applicable legislation related to electromagnetic compatibility and 
shall be protected against electrostatic discharges and transients.  
2.2 Measuring interva ls 
2.2.1 Vehicle speed  
The DT shall measure speed within the interval of 0  km/h to 220  km/h with a resolution of 1  km/h or 
better.  
2.2.2 Distance travelled  
The distance travelled may be measured either so as to combine both forward and reverse movement, 
or so as to include only forward movements.  
The DT shall be able to record distance within the interval of not less than 0  km to 9  999 999.9  km. Draft Measure No  0111 -OOP -C062 -15 
6 2.2.3 Time  
The ‘time measurement’ function of the digital tachograph shall measure time permanently and 
digitally  provide UTC date and time with a resolution of 1  km/h or better.  
2.3 Maximum tolerances in verification  
2.3.1 Maximum tolerances for tachographs before installation  
The maximum tolerances for digital tachographs before installation in a vehicle are listed  in Table  1. 
Table 1  – Maximum tolerances for digital tachographs before installation  
Parameter  Maximum tolerances  
distance travelled  1 % more or less than the real distance, where that 
distance is at least one kilometre  
speed  ±1 km/h  
time ±2 s over 24  h 
The maximum tolerance of ±1  km/h for speed applies for speeds between 20  km/h and 180  km/h for 
characteristic coefficients of the vehicle ‘ W’ between 4  000 and 25  000 imp/km.  
2.3.2 Maximum tolerances for tachographs after installation  
The maximum tolera nces for digital tachographs after installation in a vehicle are listed in Table  2. 
Table  2 – Maximum tolerances for tachographs after installation  
Parameter  Maximum tolerances  
distance travelled  2 % more or less than the real distance, where that 
distanc e is at least one kilometre;  
speed  ±2 km/h  
time ±2 s over 24  h 
 
Maximum tolerances apply for testing under the following conditions:  
a) vehicle unladen, in normal running order,  
b) tyre pressures in accordance with the manufacturer’s instructions,  
c) tyre wear w ithin the limits allowed by national regulations,  
d) the vehicle shall advance under its own engine power in a straight line on level ground at a 
speed of 50  ± 5 km/h and the measuring distance shall be at least 1  000 m.Provided that it is of 
comparable accur acy, suitable test equipment (dynamometer) may also be used for the test.  
The maximum tolerances for speed apply for speeds indicated by the speed indicator and for speeds 
recorded on the record sheet.  
2.4 Maximum tolerances in use  
The maximum tolerances f or digital tachographs in use are listed in Table  3. 
Table 3  – Maximum tolerances for tachographs in use  
Parameter  Maximum tolerances  
distance travelled  4 % more or less than the real distance, where that distance 
is at least one kilometre;  Draft General Measure No  0111 -OOP -C062 -15 
7 speed  ±6 km/h  
time ±2 s over 24  h 
 
The maximum tolerances are valid for temperatures between 0  °C and 40  °C taken in close proximity 
to the equipment.  
3 Technical requirements  
The technical requirements are based on the requirements under Annex  1B to Council Regulati on 
(EEC ) No 3821/85 on recording equipment in road transport and Regulation (EU) No  165/2014 of the 
European Parliament and of the Council.  
The digital tachograph shall record and store data in the data memory and the inserted tachograph 
card.  
Tachographs and tachograph cards shall comply with the following requirements:  
- record data related to the driver, driver activity and the vehicle which shall be accurate and 
reliable;  
- be secure, in particular guaranteeing the integrity and the origin of the source of data recorded 
by and retrieved from vehicle units and motion sensors;  
- be interoperable as between the various generations of vehicle units and tachograph cards;  
- allow for efficient verification of compliance with the above regulations and other applicable 
legal acts;  
- be user -friendly.  
Digital tachographs shall record the following data:  
- the distance travelled and the speed of the vehicle;  
- time measurement;  
- the identity of the driver;  
- the activity of the driver;  
- control, calibration and tachograph repair dat a, including the identity of the workshop;  
- events and faults.  
Digital tachographs shall ensure the following functions:  
- speed and distance measurement;  
- second independent speed signal;  
- monitoring of driver activities and driving status;  
- monitoring of the i nsertion and withdrawal of tachograph cards;  
- recording of drivers’ manual entries;  
- calibration;  
- monitoring of control activities;  
- detection and recording of events and faults;  
- reading from data memory and recording and storing in data memory;  
- reading from tachograph cards and recording and storing in tachograph cards;  
- displaying, warning, printing and downloading of data to external devices;  Draft Measure No  0111 -OOP -C062 -15 
8 - time adjustment and measurement;  
- company locks management;  
- built-in and self tests.  
3.1 Modes of operation  
Digital ta chographs shall possess four modes of operation:  
a) operational mode;  
b) control mode;  
c) calibration mode;  
d) company mode.  
Digital tachographs shall switch to the various modes of operation according to the valid tachograph 
card inserted into the card interface devi ce. 
Digital tachographs shall ignore non -valid cards inserted, except displaying, printing or downloading 
data held on an expired card which shall be possible.  
All functions listed under point  3 shall be active in any mode of operation with the following 
exceptions:  
- the calibration function is accessible in the calibration mode only,  
- the time adjustment function is limited when not in the calibration mode,  
- the driver manual entries functions are accessible in operational or calibration modes only,  
- the compa ny locks management function is accessible in the company mode only;  
- the monitoring of control activities function is operational in the control mode only;  
- the downloading function is not accessible in the operational mode (except when downloading 
data for  a company which provides proof of its access rights for data downloading);  
The recording equipment can output any data to display, printer or external interfaces with the 
following exceptions:  
- in the operational mode, any personal identification (surname and first name(s)) not 
corresponding to a tachograph card inserted shall be blanked and any card number not 
corresponding to a tachograph card inserted shall be partially blanked (every odd character 
from left to right shall be blanked);  
- in the company mod e, driver related data can be output only for periods not locked by another 
company (as identified by the first 13 digits of the company card number);  
- when no card is inserted in the recording equipment, driver related data can be output only for 
the curre nt and eight previous calendar days.  
3.1.1  Display and warning  
Information contained in digital tachographs and tachograph cards relating to vehicle activities and to 
drivers and co -drivers shall be displayed in a clear, unambiguous and ergonomic way.  
The following information shall be displayed:  
a) time;  
b) mode of operation;  
c) driver activity:  
- if the current activity is driving, the driver’s current continuous driving time and the current 
cumulative break time,  Draft General Measure No  0111 -OOP -C062 -15 
9 - if the current activity is availability/other work/r est or break, the current duration of that 
activity (since it was selected) and the current cumulative break time;  
d) data related to warnings;  
e) data related to menu access.  
Additional information may be displayed, provided that it is clearly distinguishable f rom the 
information required in this paragraph.  
Digital tachographs shall warn drivers when detecting any event and/or fault, and before and at the 
time of exceeding the maximum allowed continuous driving time, in order to facilitate compliance 
with the re levant legislation.  
Warnings shall be visual and may also be audible.Warnings shall have a duration of at least 30 
seconds, unless acknowledged by the user by pushing any key of the digital tachograph.The reason for 
the warning shall be displayed and shall  remain visible until acknowledged by the user using a specific 
key or command of the digital tachograph.  
3.2 Construction of digital tachographs  
Digital tachographs include a processing unit, a data memory, a real time clock, two smart card 
interface devi ces (driver and co -driver), a printer, a display, a visual warning, a 
calibration/downloading connector, and facilities for entry of user’s inputs.  
Digital tachographs may be connected to other devices through additional connectors.Any inclusion in 
or conn ection to the recording equipment of any function, device, or devices, approved or otherwise, 
shall not interfere with, or be capable of interfering with, the proper and secure operation of the 
recording equipment or compliance with the requirements of Reg ulation (EU) No  165/2014 of the 
European Parliament and of the Council and Regulation (EC) No 561/2006.  
3.3 Security measures  
The system security aims at protecting the data in the data memory of the digital tachograph in such a 
way as to prevent unauthori sed access to or manipulation of the data and detecting any such attempts, 
protecting the integrity and authenticity of data exchanged between the motion sensor and the vehicle 
unit, protecting the integrity and authenticity of data exchanged between the r ecording equipment and 
the tachograph cards, and verifying the integrity and authenticity of data downloaded.  
In order to achieve system security, digital tachographs shall meet the security requirements defined in 
Regulation (EU) No  165/2014 of the Europe an Parliament and of the Council.  
3.4 Recording and storing of data in the data memory  
For the purposes of this article ‘365 days’ means 365 calendar days of average driver’s activity in a 
vehicle.The average activity per day in a vehicle is defined as at least six drivers or co -drivers, six card 
insertion withdrawal cycles, and 256 activity changes.365 days therefore include at least 2  190 (co -
)drivers, 2  190 card insertion withdrawal cycles, and 93  440 activity changes.  
Times are recorded with a resolutio n of one minute, unless otherwise specified.Distances travelled are 
recorded with a resolution of one kilometre.Speeds are recorded with a resolution of 1  km/h.  
Data stored into the data memory shall not be affected by an external power supply cut -off of l ess than 
12 months.  
The recording equipment shall be able to record and store implicitly or explicitly in its data memory 
the following data:  Draft Measure No  0111 -OOP -C062 -15 
10 3.4.1  Equipment identification data  
a) DT identification data  
These data are recorded and stored in the data memory o nce and for all by the DT 
manufacturer, except the software -related data and type approval number which may be 
changed in case of software upgrade.  
b) Motion sensor identification data  
These data are recorded and stored once and for all in the motion sensor d ata memory by the 
motion sensor manufacturer.  
3.4.2  Security elements  
The DT shall be able to store the following security elements:  
- European public key;  
- Member State certificate;  
- equipment certificate;  
- equipment private key.  
Recording equipment security e lements are inserted in the DT by the manufacturer of the DT.  
3.4.3  Driver card insertion and withdrawal data  
The DT shall record and store these data in its data memory for each insertion and withdrawal cycle of 
a driver or workshop card.  
3.4.4  Driver act ivity data  
The DT shall record and store the relevant data in its data memory whenever there is a change of 
activity for the driver and/or the co -driver or whenever there is a change of driving status, or whenever 
there is an insertion or withdrawal of a d river or workshop card.  
3.4.5  Places where the driver’s daily work periods begin or end  
The DT shall record and store the relevant data in its data memory whenever a (co -)driver enters the 
place where a daily work period begins or ends.  
3.4.6  Odometer data  
The DT shall record in its data memory the data on distance travelled and the corresponding date at 
midnight every calendar day.  
3.4.7  Detailed speed data  
The DT shall record and store in its data memory the data on the instantaneous speed of the vehicle 
and the corresponding date and time at every second of at least the last 24  hours that the vehicle has 
been moving.  
3.4.8  Events data  
For the purposes of this point, time shall be stored with a resolution of one second.  
The DT shall record and store in its  data memory the following data for each event detected according 
to the following storage rules:  
- card inserted at the beginning or end of an event, the ‘card conflict’ event (the 10 most recent 
events);  
- driving without an appropriate card (the longest eve nt for each of the 10 last days of 
occurrence, plus the five longest events over the last 365 days);  Draft General Measure No  0111 -OOP -C062 -15 
11 - card insertion while driving (the last event for each of the 10 last days of occurrence);  
- last card session not correctly closed (the 10 most recent events ); 
- over speeding (the most serious event for each of the 10 last days of occurrence [i.e. the one 
with the highest average speed), plus the five most serious events over the last 365 days, plus 
the first event having occurred after the last calibration];  
- power supply interruption (the longest event for each of the 10 last days of occurrence, plus 
the five longest events over the last 365 days);  
- motion data error (the longest event for each of the 10 last days of occurrence, plus the five 
longest events over  the last 365 days);  
- vehicle motion conflict (the longest event for each of the 10 last days of occurrence, the 5 
longest events over the last 365 days, date and time of beginning of event, date and time of 
end of event, card type, number and issuing Membe r State of any card inserted at beginning 
and/or end of the event, number of similar events that day);  
- security breach attempt (the 10 most recent events for each type of event, date and time of 
beginning of event, date and time of end of event, card type,  number and issuing Member 
State for any event).  
The recording equipment shall also record and store in its data memory:  
- the date and time of the last over speeding control;  
- the date and time of the first over speeding following over speeding control;  
- the number of over speeding events since the last over speeding control.  
These data may be recorded at power supply reconnection only, times may be indicated with an 
accuracy to the minute.  
3.4.9  Faults data  
The DT shall record and store in its data memory the  following data for each fault detected according 
to the following storage rules:  
- card fault (the 10 most recent driver card faults);  
- DT fault (the 10 most recent faults for each type of fault, the first fault after the last 
calibration).  
Time shall be rec orded with a resolution of one second.  
3.4.10  Calibration data  
The DT shall record and store in its data memory data relevant to:  
- known calibration parameters at the moment of activation;  
- its very first calibration following its activation;  
- its first calib ration in the current vehicle (as identified by its vehicle identification number);  
- the five most recent calibrations (if several calibrations happen within one calendar day, only 
the last one of the day shall be stored).  
For each calibration, the followin g data shall be recorded:  
- purpose of calibration (activation, first installation, installation, periodic inspection);  
- workshop name and address;  
- workshop card number, card issuing Member State and card expiry date;  
- vehicle identification;  Draft Measure No  0111 -OOP -C062 -15 
12 - parameters update d or confirmed – W, k, l , tyre size, speed limiting device setting, odometer 
(old and new values), date and time (old and new values).  
3.4.11  Time adjustment data  
The DT shall record and store in its data memory data relevant to:  
- the most recent time adjus tment;  
- the five largest time adjustments, since last calibration, performed in calibration mode outside 
the frame of a regular calibration.  
The following data shall be recorded for each of these time adjustments:  
- date and time, old value;  
- date and time, ne w value;  
- workshop name and address;  
- workshop card number, card issuing Member State and card expiry date.  
3.4.12  Control activity data  
The DT shall record and store in its data memory the following data relevant to the 20 most recent 
control activities:  
- date and time of the control;  
- control card number and card issuing Member State;  
- type of the control (displaying, printing or DT downloading or card downloading).  
In case of downloading, the dates of the oldest and of the most recent days downloaded shall al so be 
recorded.  
3.4.13  Company locks data  
The DT shall record and store in its data memory the following data relevant to the 255 most recent 
company locks:  
- lock-in date and time;  
- lock-out date and time;  
- company card number and card issuing Member States;  
- company name and address.  
Data previously locked by a lock removed from memory due to the limit above, shall be treated as not 
locked.  
3.4.14  Download activity data  
The DT shall record and store in its data memory the following data relevant to the last da ta memory 
downloading to external media while in company or in calibration mode:  
- date and time of downloading;  
- company or workshop card number and card issuing Member State;  
- company or workshop name.  
3.4.15  Specific conditions data  
The DT shall record in i ts data memory the following data relevant to specific conditions:  
- date and time of the entry;  Draft General Measure No  0111 -OOP -C062 -15 
13 - type of specific condition.  
The data memory shall be able to record and hold specific conditions data for at least 365  days (with 
the assumption that on average,  one specific condition is opened and closed per day).When storage 
capacity is exhausted, new data shall replace oldest data.  
3.5 Reading from tachograph cards  
The digital tachograph shall be able to read from tachograph cards the necessary data:  
- to identi fy the card type, the card holder, the previously used vehicle, the date and time of the 
last card withdrawal and the activity selected at that time;  
- to check that last card session was correctly closed;  
- to compute the driver’s continuous driving time, cum ulative break time and cumulated driving 
times for the previous and the current week;  
- to print requested printouts of data recorded on a driver card;  
- to download a driver card to external media.  
In case of a reading error, the digital tachograph shall try again, three times maximum, the same read 
command, and then if still unsuccessful, declare the card faulty and non -valid.  
3.6 Recording and storing on tachograph cards  
The DT shall set the ‘card session data’ in the driver or workshop card right after the card insertion.  
The DT shall update data stored on valid driver, workshop or control cards with all data relevant to the 
period while the card is inserted and relevant to the card holder.  
The DT shall update driver activity and location data stored on vali d driver and/or workshop cards 
with activity and location data manually entered by the card holder.  
The scope of data stored on cards is provided in Chapter  IV or Annex  1B to Council Regulation (EEC) 
No 3821/85.  
The data stored in tachograph cards shall be  updated in a manner and at a time when needed, taking 
into account card actual storage capacity and replacing oldest data with most recent data.  
In the case of a writing error, the DT shall try again, three times maximum, the same write command, 
and then if still unsuccessful, declare the card faulty and non -valid.  
Before releasing a driver card, and after all relevant data have been stored on the card, the DT shall 
reset the card session data.  
3.7 Displaying  
The DT shall be able to display:  
a) default data;  
b) data related to warnings;  
c) data related to menu access;  
d) other data requested by a user.  
If the recording equipment displays the vehicle odometer and speedometer values, the following 
details shall also appear on its display:  
- near the figure indicating the d istance, the unit of measurement of distance, indicated by the 
abbreviation ‘km’;  
- near the figure showing the speed, the entry ‘km/h’.  Draft Measure No  0111 -OOP -C062 -15 
14 The recording equipment may also be switched to display the speed in miles per hour, in which case 
the unit of measuremen t of speed shall be shown by the abbreviation ‘mph’.  
Additional information may be displayed by the DT, provided that it is clearly distinguishable from 
information required above.  
Concerning (a) Displaying of default data:  
When no other information needs to be displayed, the digital tachograph shall display, by default, the 
following data:  
- the local time (as a result of UTC time + offset as set by the driver);  
- the mode of operation;  
- the current activity of the driver and the current activity of the co -driver. 
Information related to the driver:  
- if his current activity is DRIVING, his current continuous driving time and his current 
cumulative break time,  
- if his current activity is not DRIVING, the current duration of this activity (since it was 
selected) and his current cumulative break time.  
Concerning (b) Displaying of data related to warnings:  
The DT shall display warning information using primarily the pictograms of Appendix  3 in Annex  1B 
to Council Regulation (EEC) No  3821/85, completed where needed by an  additional numerically 
coded information.  
Concerning (c) Displaying of data related to menu access:  
The DT shall provide necessary commands through an appropriate menu structure.  
Concerning (d) Other displayed data:  
It shall be possible to display selecti vely on request:  
- the UTC date and time, and local time offset;  
- the content of any of the six printouts under the same formats as the printouts themselves;  
- the continuous driving time and cumulative break time of the driver;  
- the continuous driving time and cumulative break time of the co -driver;  
- the cumulated driving time of the driver for the previous and the current week;  
- the cumulated driving time of the co -driver for the previous and the current week.  
Optionally:  
- the current duration of co -driver activit y (since it was selected);  
- the cumulated driving time of the driver for the current week;  
- the cumulated driving time of the driver for the current daily work period;  
- the cumulated driving time of the co -driver for the current daily work period.  
Printout co ntent display shall be sequential, line by line.If the display width is less than 24 characters, 
the user shall be provided with the complete information through appropriate means (several lines, 
scrolling, etc.).Printout lines devoted to hand -written info rmation may be omitted for display.  
3.8 Printing  
The DT shall be able to print information from its data memory or from tachograph cards in 
accordance with the six following printouts:  Draft General Measure No  0111 -OOP -C062 -15 
15 - driver activities from card daily printout;  
- driver activities from vehi cle unit daily printout;  
- events and faults from card printout;  
- events and faults from vehicle unit printout;  
- technical data printout;  
- over speeding printout.  
Additional data may be provided at the end of these printouts.Additional printouts may also be 
provided by the DT, if clearly distinguishable from the six aforementioned printouts.  
The ‘driver activities from card daily printout’ and ‘events and faults from card printout’ shall be 
available only when a driver card or a workshop card is inserted in the DT.The DT shall update data 
stored on the relevant card before starting printing.In order to produce the ‘driver activities from card 
daily printout’ or the ‘events and faults from card printout’, the DT shall:  
- either automatically select the driver card o r the workshop card if one only of these cards is 
inserted or  
- provide a command to select the source card or select the card in the driver slot if two of these 
cards are inserted in the DT.  
Complete and detailed requirements for printers and standard print outs are specified in Annex  1B to 
Council Regulation (EEC) No  3821/85 and its Appendix  4. 
Printers shall be so designed as to produce these printouts with a degree of definition likely to avoid 
any ambiguity when they are read.  
Print -outs must remain legib le under normal conditions of storage for at least one year.Printouts shall 
retain their dimensions and recordings under normal conditions of relative humidity (10 to 90  %) and 
temperature.  
The printout paper used by the recording equipment shall bear the relevant type approval mark and an 
indication of the type(s) of DT with which it may be used.  
Printouts shall remain legible under normal conditions of storage, in terms of light intensity, humidity 
and temperature, for at least two years.  
3.9 Data downloa ding to external media  
The DT shall be able to download on request data from its data memory or from a driver card to 
external storage media via the calibration or downloading connector.The DT shall update data stored 
on the relevant card before starting d ownloading.  
In addition and as an optional feature, the recording equipment may, in any mode of operation, 
download data through another connector to a company authenticated through this channel.In such a 
case, company mode data access rights shall apply t o this download.  
Downloading shall not alter or delete any stored data.  
The calibration or downloading connector electrical interface is specified in detail in Appendix 6 of 
Annex  1B to Council Regulation (EEC) No  3821/85.  
Downloading protocols are specifi ed in Appendix  7 of Council Regulation (EEC) No  3821/85.  
3.10 Output data to additional external devices  
When the DT does not include speed or odometer display functions, the DT shall provide output 
signal(s) to allow for displaying the speed of the vehicl e (speedometer) or the total distance travelled 
by the vehicle (odometer).  Draft Measure No  0111 -OOP -C062 -15 
16 The DT shall also be able to output signal corresponding to the following data using an appropriate 
dedicated serial link independent from an optional CAN bus connection to allow th eir electronic 
processing by other electronic units installed in the vehicle:  
- current UTC date and time;  
- vehicle speed;  
- total distance travelled by the vehicle (odometer);  
- currently selected driver and co -driver activity;  
- information if any tachograph card  is currently inserted in the driver slot and in the co -driver 
slot and the card’s identification data (card number and issuing Member State).  
In addition, the DT shall provide information on the ON/OFF state of the vehicle’s ‘ignition’; 
additional informa tion regarding this state may also be available.  
Other metrological and technical requirements for digital tachographs are specified in detail in 
Annex  1B to Council Regulation ( EEC ) No  3821/85, Regulation (EU) No  165/2014 of the European 
Parliament and of  the Council and Regulation (E C) No 561/2006.  
3.11 Calibration  
The calibration function shall allow:  
a) to automatically pair the motion sensor with the VU;  
b) to digitally adapt the constant of the digital tachograph ‘ k’ to the characteristic coefficient of 
the vehicle ‘ W’ (vehicles with two or more axle ratios shall be fitted with a switch device 
whereby these various ratios will automatically be brought into line with the ratio for which 
the recording equipment has been adapted to the vehicle);  
c) to adjust (with out limitation) the current time;  
d) to adjust the current odometer values;  
e) to update impulse sensor identification data stored in the data memory;  
f) to update or confirm other parameters known to the recording equipment: vehicle 
identification, W, l, tyre size  and speed limiting device setting, if applicable.  
Pairing the motion sensor to the vehicle unit shall consist, at least, in:  
- updating impulse sensor installation data held by the impulse sensor (as needed);  
- copying from the motion sensor to the vehicle un it data memory necessary motion sensor 
identification data.  
The calibration function shall be able to input necessary data through the calibration or downloading 
connector in accordance with the calibration protocol defined in Appendix 8 of Annex  1B to Cou ncil 
Regulation (EEC) No  3821/85.The calibration function shall also be able to input necessary data 
through other connectors.  
3.12 Time adjustment  
The time adjustment function shall allow for adjusting the current time in amounts of one minute 
maximum at intervals of not less than seven days.It shall allow for adjusting the current time without 
limitation in calibration mode.  
3.13 Materials  
All the constituent parts of the recording equipment shall be made of materials of sufficient stability 
and mechanica l strength and with stable electrical and magnetic characteristics.  
For normal conditions of use, all the internal parts of the equipment shall be protected against damp 
and dust.  Draft General Measure No  0111 -OOP -C062 -15 
17 Digital tachographs shall meet the cover protection grade IP  40 and the moti on sensor shall meet the 
cover protection grade IP  64. 
The equipment shall conform to applicable technical specifications related to ergonomic design.  
The equipment shall be protected against accidental damage.  
3.14 Tachograph card  
Digital tachographs shal l be so designed that the driver card (with memory) is locked in position on its 
proper insertion into the card reader and that the relevant driver card data are automatically stored in 
the data memory of the DT.The release of the driver card may function only when the vehicle is 
stationary and after the relevant data have been stored on the driver card.  
3. 14.1  Tachograph cards shall be subject to type approval consisting of:  
a) safety certification;  
b) functionality certification;  
c) certification of interoperabil ity of the given tachograph card with every approved digital 
tachograph.  
3.14.2  Tachograph cards shall include, inter alia:  
- card type name;  
- card issuing Member State;  
- distinguishing sing of the Member State issuing the card;  
- card holder identification;  
- start of validity and expiry date of the card;  
- the name of the issuing authority.  
3.14.3  Tachograph cards shall be printed with the following background predominant colours:  
a) driver card – white;  
b) control card – blue;  
c) workshop card – red; 
d) company card – yellow.  
3.14.4  Tachograph cards shall bear features for protection of the card against counterfeiting and 
tampering.  
3.14.5  Security measures  
The system security aims at protecting authenticity of data exchanged between the cards and the 
digital tachograph, prote cting the integrity and authenticity of data downloaded from the cards, 
allowing certain write operations onto the cards to digital tachograph only and protecting the card 
against damage and detecting any attempt of that kind.  
In order to achieve the syste m security, the tachograph cards shall meet the security requirements 
defined in Annex  1B to Council Regulation (EEC) No  3821/85.  
3.15 Motion sensor  
The motion sensor is intended to be installed in road transport vehicles.Its purpose is to provide 
secured motion data representative of vehicle’s speed and distance travelled.  Draft Measure No  0111 -OOP -C062 -15 
18 The motion sensor is subject to type approval consisting of safety certification and functionality 
certification.  
Interoperability between every model of motion sensor and every DT is no t required, therefore the 
type approval for a motion sensor can be granted only in combination with the type approval of a DT 
and vice versa.  
The motion sensor is mechanically interfaced to a moving part of the vehicle, which movement can be 
representative  of vehicle’s speed or distance travelled.It may be located in the vehicle’s gear box or 
other part of the vehicle.  
In its operational mode, the motion sensor is connected to a vehicle unit.  
It may also be connected to specific equipment for management pur poses (to be defined by 
manufacturer).The motion sensor shall record and store in its data memory in the vehicle unit the 
following motion sensor installation data:  
a) first pairing with a DT (date, time, DT type -approval number, DT serial number);  
b) last pairi ng with a DT (date, time, DT type -approval number, DT serial number).  
The motion sensor shall store in its data memory the following identification data:  
a) name of the manufacturer;  
b) part number;  
c) serial number;  
d) type-approval mark;  
e) embedded security component identifier (e.g. internal chip/processor number);  
f) operating system identifier (e.g. software version number).  
Motion sensor identification data are recorded and stored once and for all in the motion sensor data 
memory, by the motion sensor manufacturer.  
Other requirements for motion sensors are specified in detail in Annex  1B to Council Regulation 
(EEC ) No 3821/85.  
3.16 Adaptor for category M1 and N1 vehicles  
Adaptor is a part of the recording equipment installed and used only in M1 and N1 vehicles put into  
service for the first time between 1.5.2006 and 31.12.2015, where it is not mechanically possible to 
install any other type of existing motion sensor.Any adaptor may be submitted for its own type 
approval, or for type approval as a component of a recordin g equipment.  
The adaptor shall include the following functions:  
- interfacing and adapting the incoming speed pulses;  
- inducing the incoming pulses to the embedded motion sensor;  
- all functions of the embedded motion sensor, providing secured motion data to th e vehicle 
unit. 
The adaptor shall not be mechanically interfaced to a moving part of the vehicle, but connected to the 
distance/speed impulses which are generated by integrated sensors or alternative interfaces.  
The identification data of the embedded moti on sensor shall be used by the tachograph to identify the 
adaptor.  Draft General Measure No  0111 -OOP -C062 -15 
19 4 Inscriptions and marks  
4.1 Descriptive plaque  
A descriptive plaque shall be affixed to each separate component of the digital tachograph and show 
the following details:  
a) name and address o f the manufacturer of the equipment;  
b) manufacturer's part number and year of manufacture of the equipment;  
c) serial number;  
d) type-approval mark of the digital tachograph.  
When physical space is not sufficient to show all above -mentioned details, the descriptiv e plaque shall 
show at least the manufacturer’s name or logo and the part number.  
5 Type approval  
Tachographs (recording equipment) are not subject to type approval under the Metrology Act.  
Tachographs are subject to type -approval in accordance with Articl e 13 of Regulation (EU) 
No 165/2014 of the European Parliament and of the Council through which Member States certify that 
the tachograph, its relevant components or the tachograph card to be introduced to market fulfil the 
requirements of this Regulation.  
Approval of recording equipment consists of a separate approval of the vehicle unit, motion sensor, 
tachograph card and model printout paper.  
5.1 Requirements relating to type approval  
The requirements relating to type approval are specified in detail in Annex  1B to Council Regulation 
(EEC ) No  3821/85 and Regulation (EU) No  165/2014 of the European Parliament and of the 
Council.The competent authorities of each Member State shall indicate on the approval certificate for 
a model printout paper, the type or types of digital tachographs in which that model paper may be 
used.  
5.2 Type approval mark and type approval certificate  
The type approval mark consists of a rectangle within which shall be placed the letter ‘e’ and a 
distinguishing number or letter for th e country which has approved the type, and a type approval 
number which corresponds to the type -approval certificate number for the recording equipment (i.e. 
tachograph and/or motion sensor) or the model record sheet, placed at any point within the immedia te 
proximity of this rectangle.  
The type approval mark shall be shown on the descriptive plaque of each set of equipment and each 
record sheet.It must be indelible and must always remain clearly legible.  
The precise appearance of the type approval mark, in cluding dimensions, is provided in Annex  II to 
Regulation (EU) No  165/2014 of the European Parliament and of the Council.  
No Member State may refuse to register a vehicle fitted with recording equipment, or prohibit the use 
of such vehicle for any reason c onnected with this equipment, if the equipment bears the type approval 
mark and the installation plaque.  
6 Installation and verification  
6.1 Installation of recording equipment  
New recording equipment shall be delivered non -activated to an entity authorise d to carry out 
installation, with all calibration parameters, as listed in point  3.4.10, set to appropriate valid default Draft Measure No  0111 -OOP -C062 -15 
20 values.Where no particular value is appropriate, literal parameters shall be set to strings of ‘?’ and 
numeric parameters shall be set  to ‘0’.Before its activation, the recording equipment shall give access 
to the calibration function even if not in calibration mode.Before its activation, the recording 
equipment shall neither record nor store data referred to in points  3.4.3 to 3.4.9 and  3.4.12 to 3.4.14 
inclusive.During installation, manufacturers shall pre -set all known parameters.  
Vehicle manufacturers or approved workshops shall activate the installed recording equipment before 
the vehicle is used in scope of Regulation (EC) No  561/20 06.The activation of the recording 
equipment shall be triggered automatically by the first insertion of a workshop card in either of its card 
interface devices.Specific pairing operations required between the motion sensor and the vehicle unit, 
if any, sha ll take place automatically before or during activation.After its activation, the recording 
equipment shall fully enforce functions and data access rights.The recording and storing functions of 
the recording equipment shall be fully operational after its a ctivation.  
Installation shall be followed by a calibration and verification.The first calibration may not necessarily 
include entry of the vehicle registration number (VRN), when it is not known by the entity having to 
undertake this calibration.In these c ircumstances, it shall be possible, for the vehicle owner, and at this 
time only, to enter the VRN using his company card prior to using the vehicle in scope of Regulation 
(EC) No  561/2006.Any update or confirmation of this entry shall only be possible usi ng a workshop 
card.  
After calibration, an installation plaque which is clearly visible and easily accessible shall be affixed 
onto the recording equipment.In cases where this is not possible, the plaque shall be affixed to the 
vehicle’s ‘B’ pillar so that it is clearly visible.For vehicles that do not have a ‘B’ pillar, the installation 
plaque shall be affixed to the doorframe on the driver’s side of the vehicle and be clearly visible in all 
cases.  
In cases where it is not technically possible to affix the installation plaque directly onto or in close 
proximity of the tachograph and the vehicle does not have the ‘B’ pillar, the workshop shall affix the 
installation plaque firmly to the doorframe of the vehicle on the driver’s side.If the vehicle has no door 
on the driver’s side (e.g. certain buses), the installation plaque shall be affixed firmly on the frame of 
the vehicle’s front door.In cases where this is not possible for certain buses, the installation plaque 
shall be affixed to the side window on the dr iver’s side.  
The installation plaque shall bear at least the following details:  
a) name, address or trade name of the approved fitter or workshop;  
b) characteristic coefficient of the vehicle, in the form ‘ w = … imp/km’;  
c) constant of the recording equipment, in t he form ‘ k = … imp/km’;  
d) effective circumference of the wheel tyres, in the form ‘ l = … mm’;  
e) tyre size;  
f) the date on which the characteristic coefficient of the vehicle and the effective circumference 
of the wheel tyres were measured;  
g) vehicle identification number.  
In addition, when installing adaptors for vehicles of categories M1 and N1:  
h) the part of the vehicle where the adaptor, if any, is installed;  
i) the part of the vehicle where the motion sensor is installed, if not connected to the gear -box or 
an adapto r is not being used;  
j) a description of the colour of the cable between the adaptor and that part of the vehicle 
providing its incoming impulses;  
k) the serial number of the embedded motion sensor of the adaptor.  Draft General Measure No  0111 -OOP -C062 -15 
21 Installation plaques for vehicles equipped with adaptors, or for vehicles where the motion sensor is not 
connected to the gear -box shall be fitted at the time of installation.For all other vehicles, installation 
plaques bearing the new information shall be fitted at the time of inspection following the installation.  
For M1 and N1 vehicles only, and which are fitted with an adaptor in conformity with Appendix  16 of 
Regulation (EC) No  2016/799 and where it is not possible to include all the information necessary on 
the installation plaque, a descriptive pl aque may be used.In such cases, the descriptive plaque shall 
contain at least the information referred to in points (h) to (k).  
If a descriptive plaque is used, it shall be affixed next to the installation plaque and shall have the same 
level of protection .Furthermore, the descriptive plaque shall also bear the name and address of the 
entity that carried out the installation and the date of installation.  
In the case of installation of tachographs in vehicles subject to the European Agreement concerning 
the International Carriage of Dangerous Goods by Road (ADR), only tachographs approved for these 
vehicles may be installed.Tachographs shall be marked with a symbol with the letters ‘Ex’ in a 
hexagon.The same requirements shall apply to motion sensors.  
6.1.1  Attachment of official marks  
Any connection which, if disconnected, would cause undetectable alterations to be made or 
undetectable data loss, shall be secured with an official mark.  
The installation plaque shall be attached and secured in such a way that i t cannot be removed without 
the markings thereon being destroyed.  
The official marks mentioned above may be removed:  
- in case of emergency,  
- to install, to adjust or to repair a speed limitation device or any other device contributing to 
road safety, provide d that the recording equipment continues to function reliably and correctly 
and is secured again with the official mark of an authorised metrology centre immediately 
after fitting the speed limitation device or any other device contributing to road safety or 
within seven days in other cases.  
In the case that the official mark is broken, a written statement giving the reasons for such action shall 
be prepared and made available to the competent authority.  
6.2 Initial verification of digital tachographs  
The t achograph shall be delivered for verification activated and installed in the vehicle.  
The subject of tachograph verification shall be the inspection of the tachograph and vehicle in which 
the tachograph is installed, a test of the functions of the tachogra ph, determination of the metrological 
parameters of the tachograph and the vehicle, adjustment of the constants ‘ k’ and ‘ W’ and, if 
appropriate, entry or modification of data in the data memory of the digital tachograph.  
6.2.1  External inspection of tachog raphs and vehicles and recording of results:  
- external inspection and check of completeness, identification and functionality of the 
tachograph;  
- inspection of the vehicle (check according to the vehicle registration certificate);  
- check of suitability, integ rity and identification of the impulse sensor.  
6.2.2  Vehicle tests  
- determination of the effective circumference of the tyres on driving wheels;  
- determination of the vehicle constant ‘ W’. Draft Measure No  0111 -OOP -C062 -15 
22 6.2.3  Sensor functionality check  
6.2.4  Check of the adaptor for categ ory M1 and N1 vehicles  
6.2.5  Procedure for the verification of digital tachographs  
The procedure for the verification of digital tachographs consists of:  
- external inspection and check of functionality of the tachograph;  
- external inspection of the vehicle;  
- tachograph activation (automatic check after inserting the workshop card), if not already 
activated;  
- determination of the effective circumference of the tyres on driving wheels;  
- determination of the characteristic coefficient ‘ W’ of the vehicle;  
- DT calibra tion and programming, i.e. check and entry of standard data in the data memory and 
programming of specific parameters and functions depending on the vehicle and/or other 
accessories linked to the tachograph;  
- test of indication of speed and distance travell ed; 
- check and test of functionality of the independent motion signal IMS;  
- test of accuracy of the crew activity record;  
- tachograph time base test;  
- test drive;  
- attachment of the installation plaque and official marks onto the tachograph;  
- attachment of the i nstallation plaque and official marks onto the M1 and N1 vehicle adaptor;  
- keeping of a continuous record of the test specifying the conditions and partial and final 
results of the above tests;  
- continuous making of printouts from the data memory;  
- preparatio n and printing of a tampering check report;  
- issue of a ‘Tachograph test record’ on the basis of the data observed and recorded;  
- downloading, viewing and archiving of data from the workshop card and DT memory;  
- downloading of data from the DT on the basis of  the company lock and issue of a 
confirmation of data copying.If it is not possible to copy data from the data memory, a 
‘Confirmation of impossibility of data copying’ shall be issued;  
- keeping of the ‘Tachograph test record’ throughout the verification pr ocedure.  
6.2.6  Official marks and verification documentation  
Based on positive results of all tests and compliance with the requirements of this General Measure, 
the installation plaque and the official mark of the authorised metrology centre shall be atta ched to the 
appropriate part of the tachograph, i.e. onto, into or, if appropriate, outside the tachograph.In order to 
increase the durability of the installation plaque, it shall be covered with a transparent protective film 
so that the official mark is a lways broken when the installation plaque is removed.  
7 Follow -up verification  
Periodic verification of tachographs installed in vehicles shall take place after any repair of the 
recording equipment or after any alteration of the characteristic coefficient  of the vehicle or the 
effective circumference of the tyres, or after equipment UTC time is wrong by more than 20 minutes, Draft General Measure No  0111 -OOP -C062 -15 
23 or when the vehicle registration number has changed, and at least once within two years (24 months) 
of the last inspection.  
The scope  of follow -up verification tests of digital tachographs shall be identical to that of initial 
verification.  
8 Examination at the request of a concerned person in accordance with §  11a 
Users of legally controlled measuring instruments shall, at the request of a person who may be 
affected by inaccurate measurement, request examination of the legally controlled measuring 
instrument.The tachograph shall meet the metrological requirements specified in chapter 2.3.1 of this 
General Measure.  
Examination shall cons ist of the following types of tests:  
a) determination of the effective circumference of the tyres on driving wheels;  
b) determination of the characteristic coefficient W of the vehicle;  
c) tests of indication of speed and distance travelled;  
d) tests of ac curacy of the crew activity record;  
e) tachograph time base test;  
f) test drive.  
In the course of the above tests, at the request of a person who may be affected by inaccurate 
measurement under §  11a, the authorised metrology centre shall not intervene in the data memory of 
the digital tachograph.  
9 Notified standards  
For the purposes of specifying the metrological and technical requirements for measuring instruments 
and specifying the testing methods for their type approval and verification arising from th is General 
Measure, the CMI shall provide notification of the Czech technical standards, other technical 
standards or technical documents of international or foreign organisations, or other technical 
documents containing more detailed technical requirement s (hereinafter referred to as “notified 
standards”). The CMI shall publish a list of these notified standards attached to the relevant measures, 
together with the general measure, in a manner accessible to the public (on the www.cmi.cz  website).  
Compliance with notified standards or parts thereof shall be considered, to the extent and under the 
conditions laid down in the General Measure, as compliance with those requirements laid down in this 
measure to which these standar ds or parts thereof apply.  
 
 
II. 
G R O U N D S  
The CMI has issued this General Measure laying down metrological and technical requirements for 
legally controlled measuring instruments and tests for the type approval and verification of these 
legally controlled m easuring instrument in accordance with §  14(1)(j) of the Metrology Act to 
implement §  6(1), §  9(1) and  § 9(9) of the Metrology Act.  
Under item 2.2.2 of the Annex ‘List of the types of legally controlled measuring instruments’ to 
Implementing Decree No  345/2002 specifying the measuring instruments whose verification is 
mandatory and measuring instruments subject to type approval, as amended, tachographs recording the 
work activities of drivers of motor vehicles compulsorily equipped with these tachographs, p oint (b) 
digital, are classified as measuring instruments subject to verification.  Draft Measure No  0111 -OOP -C062 -15 
24 Therefore, to implement §  24d of the Metrology Act, as amended, for this particular type of measuring 
instrument ‘tachographs recording the work activities of drivers of mot or vehicles compulsorily 
equipped with these tachographs – digital tachographs’, the CMI has issued this General Measure 
laying down the metrological and technical requirements for tachographs recording the work activities 
of drivers of motor vehicles comp ulsorily equipped with these tachographs – digital tachographs and 
testing methods for the verification of these legally controlled measuring instruments.  
This legislation (General Measure) will be notified in accordance with Directive (EU) 2015/1535 of 
the European Parliament and of the Council of 9  September  2015 laying down a procedure for the 
provision of information in the field of technical regulations and of rules on Information Society 
services.  
 
III. 
I N S T R U C T I O N S  
In accordance with §  172(l), in con junction with §  39(l) of the APC, a time limit for comments of 
30 days of posting of the draft has been set by the CMI.Comments submitted after this time limit will 
not be considered.  
The persons concerned are hereby invited to comment on this draft Genera l Measure.With a view to 
the provisions of §  172(4) of the APC, the comments shall be submitted in writing and meet the 
requirements for submissions in accordance with §  37 of the APC.  
The comments shall include the particulars referred to in §  37(2) of th e APC, stating clearly who is 
making the comments, which general measure they concern, to what extent the comments challenge 
the measure, how it contradicts legislation or how the general measure or the procedure that preceded 
it is inaccurate, which matte rs the comments concern and what is being proposed; the comments shall 
also contain an identification of the administrative authority to which they are addressed and signature 
of the person making them.  
The supporting documents for the draft General Measur e may be consulted at the Czech Metrological 
Institute, Department of Legal Metrology, Okružní 31, 638 00 Brno, door no. 158, Monday to 
Wednesday, from 9:00am to 03:30pm or, on other days, on an appointment made by phone.  
This General Measure shall be posted for a period of 15  days.  
 
 
...…………………………..............  
RNDr.Pavel Klenovský  
Director -General  
 
Person responsible for accuracy:Mgr.Tomáš Hendrych  
 
Posted on:  18.11.2016  
Signature of the authorised person confirming posting:  
 
Removed on:  
Signature of the authorised person confirming removal: