{ "url": "https://openlegislation.uk/eu-regulation-1985-3821/annex-2/appendix-12", "json_url": "https://openlegislation.uk/eu-regulation-1985-3821/annex-2/appendix-12.json", "legislation": "eur/1985/3821", "legislation_title": "Council Regulation (EEC) No 3821/85 of 20 December 1985 on recording equipment in road transport", "legislation_url": "https://openlegislation.uk/eu-regulation-1985-3821", "path": "annex/2/appendix/12", "kind": "appendix", "number": "12", "heading": "ADAPTOR FOR M 1 AND N1 CATEGORY VEHICLES", "text": "1.\nABBREVIATIONS AND REFERENCE DOCUMENTS\n1.1.\nAbbreviations\nTBD To Be Defined\nVU Vehicle Unit\n1.2.\nReference standards\nISO 16844-3 Road vehicles – Tachograph systems – Part 3: Motion sensor interface\n2.\nGENERAL CHARACTERISTICS AND FUNCTIONS OF THE ADAPTOR\n2.1.\nAdaptor general description\nADA_001 The adaptor shall provide a connected VU with secured motion data permanently representative of vehicle speed and distance travelled.\nThe adaptor is only intended for those vehicles that are required to be equipped with recording equipment in compliance with this Regulation.\nIt shall be installed and used only in those types of vehicle defined under (rr), where it is not mechanically possible to install any other type of existing motion sensor which is otherwise compliant with the provisions of this Annex and its Appendixes 1 to 11.\nThe adaptor shall not be mechanically interfaced to a moving part of the vehicle, as required by Appendix 10 of this Annex (section 3.1), but connected to the speed/distance impulses which are generated by integrated sensors or alternative interfaces.\nADA_002 A type approved motion sensor (according to the provisions of this Annex, section VIII - Type approval of recording equipment and tachograph cards) shall be fitted into the adaptor housing, which shall also include a pulse converter device inducing the incoming pulses to the embedded motion sensor. The embedded motion sensor itself shall be connected to the VU, so that the interface between the VU and the adaptor shall be compliant with the requirements set out in ISO 16844-3.\n2.2.\nFunctions\nADA_003 The adaptor shall include the following functions:\ninterfacing and adapting the incoming speed pulses,\ninducing the incoming pulses to the embedded motion sensor,\nall functions of the embedded motion sensor, providing secured motion data to the VU.\n2.3.\nSecurity\nADA_004 The adaptor shall not be security certified according to the motion sensor generic security target defined in Appendix 10 of this Annex. Security related requirements specified in section 4.4 of this Appendix shall apply instead.\n3.\nREQUIREMENTS FOR THE RECORDING EQUIPMENT WHEN AN ADAPTOR IS INSTALLED\nThe requirements in this and the following Chapters indicate how the requirements of this Annex shall be understood when an adaptor is used. The related requirement numbers are provided between brackets.\nADA_005 The recording equipment of any vehicle fitted with an adaptor must comply with all the provisions of this Annex, except otherwise specified in this Appendix.\nADA_006 When an adaptor is installed, the recording equipment includes cables, the adaptor (instead of a motion sensor), and a VU (001).\nADA_007 The detection of events and/or faults function of the recording equipment is modified as follows:\nthe ‘ power supply interruption ’ event shall be triggered by the VU, while not in calibration mode, in case of any interruption exceeding 200 milliseconds of the power supply of the embedded motion sensor (066),\nany power supply interruption of more than 200 ms (milliseconds) of the adaptor shall generate a power supply interruption of the embedded motion sensor of equivalent length. The adaptor interrupter threshold shall be defined by the adaptor manufacturer,\nthe ‘ motion data error ’ event shall be triggered by the VU in case of interruption of the normal data flow between the embedded motion sensor and the VU and/or in case of data integrity or data authentication error during data exchange between the embedded motion sensor and the VU (067),\nthe ‘ security breach attempt ’ event shall be triggered by the VU for any other event affecting the security of the embedded motion sensor, while not in calibration mode (068),\nthe ‘ recording equipment ’ fault shall be triggered by the VU, while not in calibration mode, for any fault of the embedded motion sensor (070).\nADA_008 The adaptor faults detectable by the recording equipment shall be those related with the embedded motion sensor (071).\nADA_009 The VU calibration function shall allow to automatically pair the embedded motion sensor with the VU (154, 155).\nADA_010 The terms ‘ motion sensor ’ or ‘ sensor ’ in the VU Security Target in Appendix 10 of this Annex refer to the embedded motion sensor.\n4.\nCONSTRUCTION AND FUNCTIONAL REQUIREMENTS FOR THE ADAPTOR\n4.1.\nInterfacing and adapting incoming speed pulses\nADA_011 The adaptor input interface shall accept frequency pulses representative of the vehicle speed and distance travelled. Electrical characteristics of the incoming pulses are: TBD by the manufacturer . Adjustments accessible to only the adaptor manufacturer and to the approved workshop performing the adaptor installation shall allow the correct interfacing of the adaptor input to the vehicle, if applicable.\nADA_012 The adaptor input interface shall be able, if applicable, to multiply or divide the frequency pulses of the incoming speed pulses by a fixed factor, to adapt the signal to a value in the k factor range defined by this Annex ( 4 000 to 25 000 pulses/km). This fixed factor may only be programmed by the adaptor manufacturer, and the approved workshop performing the adaptor installation.\n4.2.\nInducing the incoming pulses to the embedded motion sensor\nADA_013 The incoming pulses, possibly adapted as specified above, shall be induced to the embedded motion sensor, so that each incoming pulse shall be detected by the motion sensor.\n4.3.\nEmbedded motion sensor\nADA_014 The embedded motion sensor shall be stimulated by the induced pulses, thus allowing it to generate motion data accurately representing the vehicle movement, as if it was mechanically interfaced to a moving part of the vehicle.\nADA_015 The identification data of the embedded motion sensor shall be used by the VU to identify the adaptor (077).\nADA_016 The installation data stored in the embedded motion sensor shall be considered to represent the adaptor installation data (099).\n4.4.\nSecurity requirements\nADA_017 The adaptor housing shall be designed so that it cannot be opened. It shall be sealed, so that physical tampering attempts can be easily detected (e.g. through visual inspection, see ADA_035).\nADA_018 It shall not be possible to remove the embedded motion sensor from the adaptor without breaking the seal(s) of the adaptor housing, or breaking the seal between the sensor and the adaptor housing (see ADA_035).\nADA_019 The adaptor shall ensure that motion data may only been processed and derived from the adaptor input.\n4.5.\nPerformance characteristics\nADA_020 The adaptor shall be fully operational in the temperature range ( TBD by the manufacturer, depending on the installation position ) (159).\nADA_021 The adaptor shall be fully operational in the humidity range 10 % to 90 % (160).\nADA_022 The adaptor shall be protected against over-voltage, inversion of its power supply polarity, and short circuits (161).\nADA_023 The adaptor shall conform to Commission Directive 2006/28/EC adapting to technical progress Council Directive 72/245/EEC, related to electromagnetic compatibility, and shall be protected against electrostatic discharges and transients (162).\n4.6.\nMaterials\nADA_024 The adaptor shall meet the protection grade (TBD by the manufacturers, depending upon the installation position) (164, 165).\nADA_025 The colour of the adaptor housing shall be yellow.\n4.7.\nMarkings\nADA_026 A descriptive plaque shall be affixed to the adaptor and shall show the following details (169):\nname and address of the manufacturer of the adaptor,\nmanufacturer’s part number and year of manufacture of the adaptor,\napproval mark of the adaptor type or of the recording equipment type including the adaptor,\nthe date on which the adaptor has been installed,\nthe vehicle identification number of the vehicle on which it has been installed.\nADA_027 The descriptive plaque shall also show the following details (if not directly readable from the outside on the embedded motion sensor):\nname of the manufacturer of the embedded motion sensor,\nmanufacturer’s part number and year of manufacture of the embedded motion sensor,\napproval mark for the embedded motion sensor.\n5.\nINSTALLATION OF THE RECORDING EQUIPMENT WHEN AN ADAPTOR IS USED\n5.1.\nInstallation\nADA_028 Adaptors to be installed in vehicles shall be delivered only to vehicle manufacturers, or to workshops approved by the competent authorities of the Member States and authorised to install, activate and calibrate digital tachographs.\nADA_029 Such approved workshop installing the adaptor shall adjust the input interface and select the division ratio of the input signal (if applicable).\nADA_030 Such approved workshop installing the adaptor shall seal the adaptor housing.\nADA_031 The adaptor shall be fitted as close as possible to that part of the vehicle which provides its incoming pulses.\nADA_032 The cables for providing the adaptor power supply shall be red (positive supply) and black (ground).\n5.2.\nSealing\nADA_033 The following sealing requirements shall apply:\nthe adaptor housing shall be sealed (see ADA_017),\nthe housing of the embedded sensor shall be sealed to the adaptor housing, unless it is not possible to remove the embedded sensor without breaking the seal(s) of the adaptor housing (see ADA_018),\nthe adaptor housing shall be sealed to the vehicle,\nthe connection between the adaptor and the equipment which provides its incoming pulses shall be sealed on both ends (to the extent of what is reasonably possible).\n6.\nCHECKS, INSPECTIONS AND REPAIRS\n6.1.\nPeriodic inspections\nADA_034 When an adaptor is used, each periodic inspection (periodic inspection means in compliance with Requirement 256 through to Requirement 258 of Chapter VI of Annex 1B) of the recording equipment shall include the following checks (257):\nthat the adaptor carries the appropriate type approval markings,\nthat the seals on the adaptor and its connections are intact,\nthat the adaptor is installed as indicated on the installation plaque,\nthat the adaptor is installed as specified by the adapter and/or vehicle manufacturer,\nthat mounting an adaptor is authorised for the inspected vehicle.\n7.\nTYPE APPROVAL OF RECORDING EQUIPMENT WHEN AN ADAPTOR IS USED\n7.1.\nGeneral points\nADA_035 Recording equipment shall be submitted for type approval complete, with the adaptor (269).\nADA_036 Any adaptor may be submitted for its own type approval, or for type approval as a component of a recording equipment.\nADA_037 Such type approval shall include functional tests involving the adaptor. Positive results to each of these tests are stated by an appropriate certificate (270).\n7.2.\nFunctional certificate\nADA_038 A functional certificate of an adaptor or of recording equipment including an adaptor shall be delivered to the adaptor manufacturer only after all the following minimum functional tests have been successfully passed.\nNo\nTest\nDescription\nRelated requirements\n1.\nAdministrative examination\n1.1.\nDocumentation\nCorrectness of documentation of the adaptor\n2.\nVisual inspection\n2.1.\nCompliance of the adaptor with documentation\n2.2.\nIdentification/markings of the adaptor\nADA_026, ADA_027\n2.3.\nMaterials of the adaptor\n163 to 167\nADA_025\n2.4.\nSealing\nADA_017, ADA_018, ADA_035\n3.\nFunctional tests\n3.1.\nInducing the speed pulses to the embedded motion sensor\nADA_013\n3.2.\nInterfacing and adapting incoming speed pulses\nADA_011, ADA_012\n3.3.\nMotion measurement accuracy\n022 to 026\n3.3.\nCheck that the adaptor is immune to magnetic fields. Alternatively, verify that the adaptor reacts to magnetic fields disturbing vehicle motion detection so that a connected VU can detect, record and store sensor faults\n161a\n4.\nEnvironmental tests\n4.1.\nManufacturer test results\nResults of manufacturer environment tests\nADA_020, ADA_021, ADA_022, ADA_023, ADA_024\n5.\nEMC\n5.1.\nRadiated emissions and susceptibility\nVerify compliance with Directive 2006/28/EC\nADA_023\n5.2.\nManufacturer test results\nResults of manufacturer environment tests\nADA_023", "extent": "E+W+S+N.I.", "status": null, "version": "current", "annotations": [ { "type": "F", "label": "F1", "text": "Inserted by Council Regulation (EC) No 2135/98 of 24 September 1998 amending Regulation (EEC) No 3821/85 on recording equipment in road transport and Directive 88/599/EEC concerning the application of Regulations (EEC) No 3820/85 and (EEC) No 3821/85." }, { "type": "F", "label": "F2", "text": "Substituted by Commission Regulation (EC) No 1360/2002 of 13 June 2002 adapting for the seventh time to technical progress Council Regulation (EEC) No 3821/85 on recording equipment in road transport (Text with EEA relevance)." }, { "type": "F", "label": "F3", "text": "Inserted by Commission Regulation (EC) No 68/2009 of 23 January 2009 adapting for the ninth time to technical progress Council Regulation (EEC) No 3821/85 on recording equipment in road transport (Text with EEA relevance)." }, { "type": "F", "label": "F4", "text": "Inserted by Commission Regulation (EU) No 1266/2009 of 16 December 2009 adapting for the tenth time to technical progress Council Regulation (EEC) No 3821/85 on recording equipment in road transport (Text with EEA relevance)." }, { "type": "footnote", "label": "f1", "text": "OJ L 65, 7.3.2006, p. 27 ." } ], "outstanding_effects": [], "provenance": { "source": "legislation.gov.uk", "source_url": "https://www.legislation.gov.uk/eur/1985/3821/annex/2/appendix/12", "retrieved_at": "2026-11-01T15:05:16.849228+00:00" }, "licence": "Open Government Licence v3.0", "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/", "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives." }