Download Tacho Head

I've had 2 faults come up on my tacho last night and this morning. Anyone have any idea what may cause them? Codes 16 and 20. It's getting repaired before I'm next out in it (sadly I've got to use another vehicle meanwhile) Just curious

I think the last tachos that you changed manually between drive and other work where about 1990, since then they have been called automatic. The first automatic ones still had a paper disk, and record drive when moving regardless of what they where set to, but reverted to the selected mode when stationary. The next automatic ones, where around 2000ish, still a paper disk, but a drawer slid out to put the card on (sometimes called CD player type), they recorded drive when moving and defaulted to other work when stationary. Digital tachos from around 2006, had a quirk that could change the mode, with the ignition being turned on, eg your on break, and turn the ignition on to open a window, the tacho would change to other work, this feature could be altered by a tacho centre, But still changes to drive, when moving, and other work when still.

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Early digital tachos record a minute driving, even if you have not driven for a full minute, (in a queue), later tachos work out the times on the majority of the minute, and the minute before and after it, eg in a queue stationary minute 1, minute 2 drive 29 seconds, minute 3 stationary, the machine will record 3 minutes other work (stationary).

I am still getting the hang of it. F*cked up the other day - I had just parked up and my phone rang about a site issue. Got distracted and left my tacho card in. Didn't get use the truck again for 2 days so it seems to have put me as other work for about 40 hours straight.

I have only been had for one tacho infringement in 20 odd years and that was for being in scope, not having a card(disc) in place and not keeping daily, manual records. Boom! 200 for the one offence of not keeping manual records. At that time, I didn't know you had to! I just make a note in the diary if I remember now....

A tachograph is a device fitted to a vehicle that automatically records its speed and distance, together with the driver's activity selected from a choice of modes. The drive mode is activated automatically when the vehicle is in motion, and modern tachograph heads usually default to the other work mode upon coming to rest. The rest and availability modes can be manually selected by the driver whilst stationary.

The tachograph was originally introduced for the railways so that companies could better document irregularities. The inventor was Max Maria von Weber, a civil servant, engineer and author. The Daniel Tachometer has been known in the railway industry since 1844.[1] The Hasler Event recorder was introduced in the 1920s.[citation needed]

For reasons of public safety, many jurisdictions have limits on the working hours of drivers of certain vehicles, such as buses and trucks. A tachograph can be used to monitor this and ensure that appropriate breaks are taken.

The Verkehrs-Sicherungs-Gesetz (German Traffic Safety Law) of 19 December 1952, made tachographs mandatory in Germany for all commercial vehicles weighing over 7.5 tonnes.[citation needed] Since 23 March and 23 December 1953, all new commercial vehicles and buses must be equipped with the device per law Straenverkehrs-Zulassungs-Ordnung 57a.[citation needed]

Tachographs are mandatory for vehicles allowed to carry a total weight of over 3.5 tonnes and vehicles built to carry at least 9 passengers, if the vehicle is used for commercial purposes. They are used to review the driving and rest time of drivers during reviews by traffic standards organizations or accident investigation. 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. Companies must keep the records for 1 year. In Germany, 16 of the work time regulations lengthens this time to 2 years if the records will be used as proof of work time.[citation needed]

EEC regulation 3821/85 on recording equipment in road transport[2] from 20 December 1985 made tachographs mandatory throughout the EEC as of 29 September 1986. (Regulation 1463/70 amended by regulation 2828/77 made tachographs mandatory by 1 July 1979, reference to these regulations can be found in Regulation 3821/85).

Regulation 561/2006/EC of the European Union, adopted on 11 April 2007,[3] specified the driving and rest times of professional drivers. These time periods can be checked by the employers, police and other authorities with the help of the tachograph. Regulation (EU) 165/2014 of the European Parliament and of the Council on tachographs in road transport, issued on 4 February 2014, repealed Regulation 3821/85 and amended Regulation 561/2006.[4] The 2014 regulation introduced the specification for a so-called "smart" tachograph.[5] A "smart" tachograph records the position of a vehicle automatically via a global navigation satellite system at the places where the daily working period begins and ends, and at every three hour interval of accumulated driving.[5]

Most tachographs produced prior to 1 May 2006 were of the analogue type. Later analogue tachograph head models are of a modular design, enabling the head to fit into a standard DIN slot in the vehicle dashboard. This would enable a relatively easy upgrade to the forthcoming digital models, which were manufactured to the same physical dimensions.

The analogue tachograph head uses styli to trace lines on a wax coated paper disc that rotates throughout the day, where one rotation encompasses a 24-hour period. If the disc is left in the head over 24 hours, a second trace will be written onto the first, and so on until the disc is removed. It is an infringement of EU Regulation 561/2006 to use a disc for a period longer than it is designed for. Multiple overlapping traces may still be deciphered in the speed and distance fields, but it is far more difficult for the activity field where one trace can easily be obliterated by another. Analogue tachograph heads provide no indication to the driver of the need to change the disc.

The analogue chart must be EU type approved. The country of type approval can be found on the rear of the chart, i.e. a mark of E11 would indicate the chart to have been approved in the UK for use in the EU. The chart is manufactured out of heavyweight paper with a black printed face that is thinly coated with a white wax, upon which is printed a number of features. The surface can be scratched or rubbed to reveal the black paper underneath. This enables the traces to be made without the use of ink. The chart features a pear-shaped aperture in the centre, ensuring it is perfectly aligned upon insertion into the tachograph head. There is no facility to prevent it being inserted back to front, where the styli would be prevented from making contact with the wax surface.

The trace in the central area is the mode trace. The driver's activity is displayed in this area, and is always displayed as either drive, other work, availability or rest. Earlier tachograph heads displayed the mode as a thin line in one of four concentric tracks within the activity band. These heads are known as manual heads as the activity was manually selected using the mode switch. Automatic heads succeeded manual heads, and differ from them in two main areas. Firstly, the automatic head will always display the drive mode when the vehicle is in motion, regardless of the setting of the mode switch. For this reason, the drive mode is no longer available to be selected by the mode switch. Secondly, the activity is displayed on the chart as a sequence of block traces of differing thickness. The rest mode appears as a thin line, availability as a slightly thicker line, other work as slightly thicker again and the drive trace being the thickest.

The trace closest to the outer edge is the speed trace. The disc is preprinted with a speed scale and the stylus produces a mark corresponding with the speed of the vehicle at any given time. It is important that the maximum speed (Vmax) specification of the chart matches that of the tachograph head for the speed to be correctly recorded. It can be expected that a high speed trace will correlate with a tightly spaced zig-zag pattern within the distance trace.

Apart from enforcing regulations, tachographs are often used in Germany to investigate and punish speeding. This practice was approved by the German high regional court in the 1990s. Also, after an accident, the discs are often examined with a microscope to discover the events that took place at a collision site.[citation needed]

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. There is also "forgetting to insert" the chart when beginning duty. Unauthorized changing of the discs (and then discarding one of the two, so that some activities are "forgotten") is well known throughout Europe. "Ghosting" is another common trick when false driver information is entered onto a second chart to give the appearance that there is a second driver present in the cab for long-distance runs that cannot be completed within a single driver's daily driving period. 006ab0faaa