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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Digital Tachograph Smart Tachograph

Please help improve it or discuss these issues on the talk page. By counting the zig-zags, the total distance travelled can be calculated and compared against the stated odometer readings in the centrefield.

Speed limits by country. Tachograph data, once correlated, provides valuable data to the haulage company.

Digital tachograph

In other projects Wikimedia Commons. It will allow automatic recording of start and final location of journeys and will also enable remote access to some tachograph data via wireless data transmission to control authorities.

The sender unit produces electronic pulses as the gearbox output shaft turns. The chart features a pear-shaped aperture in the centre, ensuring it is perfectly aligned upon insertion into the tachograph head. Any assistance that tachographs provide to a driver engaged in a dispute with an employer may not be as useful if the driver cannot settle the claim due to a lack of trade union support, or due to other non-technical obstacles.

From Wikipedia, the free encyclopedia. Domestic hours regulations were replaced by European regulations which were complicated. This page was last edited on 24 Augustat The centrefield is used by the driver to store certain handwritten information.


Design specifications prevent data being altered or deleted, therefore ensuring the integrity of the data for subsequent analysis and presentation in a court case. Adoption of the legislation: 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.

Samples Keys for Smart Tachograph v1. Three traces are made in the wax surface by the head. Unsourced material may be challenged and removed.

Tachographs are also useful after an accident to help establish the cause and corroborate eye witness accounts. Tachographs are mandatory for vehicles allowed to carry a total weight of over 3.

All relevant vehicles manufactured in the EU since 1 May must be fitted with digital tachograph heads. Most tachographs produced prior to 1 May were of the analogue type.

Digital data is encrypted and cannot be altered or deleted by the driver once stored on the card or in the head. Tachographs can be tampered with in various ways, such as slightly twisting the marker, blocking the path of the arm with a piece of rubber or foam, short-circuiting the unit for short periods, intentionally preventing the detection of gear movement with a magnet, or interrupting the older analogue tachograph’s power supply with a blown fuse to stop operation completely thus recording no information whatsoever.

The Daniel Tachometer has been known in the railway industry since This would enable a relatively easy upgrade to the forthcoming digital models, which were manufactured to the same physical dimensions. The surface can be scratched or rubbed to reveal the black paper underneath. Communications regarding new ERCA policy and National policies review request for signing certificates, test keys must be addressed to: Apart from enforcing regulations, tachographs are often used in Germany to investigate and punish speeding.


Type approval Guidelines Click on the following document to be downloaded: A complete deflection is created every 5 kilometres, and therefore each completed ‘V’ represents 10 kilometres travelled.

Speed data is stored in at least 1- hertz intervals, depending on the model of tachograph head. This article is about the device used for recording vehicle data. Digital tachographs make tampering much more difficult by sending signals in an encrypted manner. Analogue discs can also be electronically scanned and analysed by computer, although this analogue to digital conversion process still requires human expert interpretation for best results, due to imperfections in the source disc such as dirt and scratch marks in the wax surface that can be incorrectly read as trace marks.

Traffic law and safety. Please help improve this article by adding citations to reliable sources. Opponents claimed that it was doubtful whether strict enforcement of these regulations would reduce driver fatigue since they were not based on scientific evidence. Finally, some of the advantages of tachographs apply primarily to drivers who can rely upon the support of a trade union.