# Council Regulation (EEC) No 3821/85 of 20 December 1985 on recording equipment in road transport, Division 5

Extent: E+W+S+N.I.

The cables connecting the recording equipment to the transmitter must be protected by a continuous plastic-coated rust-protected steel sheath with crimped ends except where an equivalent protection against manipulation is guaranteed by other means (for example by electronic monitoring such as signal encryption) capable of detecting the presence of any device, which is unnecessary for the correct operation of the recording equipment and whose purpose is to prevent the accurate operation of the recording equipment by short circuiting or interruption or by modification of the electronic data from the speed and distance sensor. A joint, comprised of sealed connections, is deemed to be continuous within the meaning of this Regulation.
The aforementioned electronic monitoring may be replaced by an electronic control which ensures that the recording equipment is able to record any movement of the vehicle, independent from the signal of the speed and distance sensor.
For the purpose of the application of the present point, M 1 and N 1 vehicles are those defined in Part A of Annex II to Council Directive 70/156/EEC . For those vehicles that are equipped with tachographs in compliance with the Regulation and are not designed to install an armoured cable between the distance and speed sensors and the recording equipment, then an adaptor shall be fitted as close as possible to the distance and speed sensors.
The armoured cable shall be fitted from the adaptor to the recording equipment.

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Source: https://www.legislation.gov.uk/eur/1985/3821/annex/I/division/V/division/5 (the official version)
Page: https://openlegislation.uk/eu-regulation-1985-3821/annex-I/division-V/division-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.