Since , tachographs are digital, which allows a more secure and accurate recording and storage of data than the previous analogue tachograph. European Commission – JRC Ispra – Digital Tachograph official website Digital Tachograph Smart Tachograph. Dear user,. The DTCO digital tachograph, with its system components, is an EC recording de- vice that complies with the technical.

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Drivers and their trade unions initially opposed the use of tachographs because they feared that employers would examine the records and reduce the driver’s pay for tafhograph time stopped, even if the stop was for a good reason, such as checking the vehicle or going to the toilet.

Digital tachograph

These pulses are interpreted as speed data by the head. This would enable a relatively easy upgrade to the forthcoming digital models, which were manufactured to the same physical dimensions. The rest and availability modes can be manually tachofraph by the driver whilst stationary.

The analogue chart must be EU type approved. When an analogue chart is visually analysed, a margin of error is present, dependent on the quality of the recording and the skill level of the analyst.

The rear face of the chart is printed with a grid that enables the driver to make handwritten additions or amendments to the information on the front. Trade unions and drivers also now favour tachographs for this reason and records are often used in tribunals as proof when claiming for unpaid work.


The new legislation can be found here:. Today operators see tachographs as levellers—devices which prevent unfair competition from companies who force their drivers to work excessive hours. Digital tachographs make tampering much more difficult by sending signals in an encrypted manner.

A driver must carry the tachograph records with him for all days of the current week and the last day of the previous week that he drove.

Federal Office for Information Security (BSI)

For reasons of public safety, tschograph jurisdictions have limits on the working hours of drivers of certain vehicles, such as buses and trucks. The last implementations developed in Mexico have GPS capabilities such as mapping, altitude and location-activated video triggering. Smart Tachograph sample set of keys and certificates v1. Speed data is stored in at least 1- hertz intervals, depending on the model of tachograph head.

This article has multiple issues. Digital data is encrypted and cannot be altered or deleted by the driver once stored on the card or in the head. The trace closest to the centrefield is the distance trace.

Tachograph – Wikipedia

Unsourced material may be challenged and removed. Views Read Edit View history. You may improve this articlediscuss the issue on the talk pageor create a new articleas appropriate. Unsourced material may be challenged and removed. The chart features a pear-shaped aperture in the centre, ensuring it is perfectly aligned upon insertion into the tachograph head.


Trade unions take a dim view of anyone who exceeds speed limits or permitted hours. Domestic hours regulations were replaced by European regulations which were complicated. You may improve this articlediscuss the issue on the talk pageor create a new articleas appropriate. Tachograph data, once correlated, provides valuable data to the haulage company.

Analogue tachograph heads provide no indication to the driver of the need to change the disc. Smart Tachograph activities Smart tachographs are the new generation of on-board mandatory digital recorders to enforce the EU legislation on professional drivers driving and resting times social regulation. Publication of seals standard EN From Wikipedia, the free encyclopedia. By using this site, you agree to the Terms of Use and Privacy Policy. The new legislation can be found here: Companies must keep the records for 1 year.

Please help improve this article by adding citations to reliable sources. This ensures that the data cannot be retrieved by another company should the vehicle subsequently change ownership, or in the case or lease or hire vehicles that are used by many companies during their life.