# Commission Implementing Regulation (EU) 2016/799 of 18 March 2016 implementing Regulation (EU) No 165/2014 of the European Parliament and of the Council laying down the requirements for the construction, testing, installation, operation and repair of tachographs and their components (Text with EEA relevance), Division (217): Motion sensors shall either:

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

react to a magnetic field disturbing vehicle motion detection. In such circumstances, the vehicle unit will record and store a sensor fault (requirement 88) or,
have a sensing element that is protected from, or immune to, magnetic fields.

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Source: https://www.legislation.gov.uk/eur/2016/799/annex/1/division/3/division/3.24/division/217 (the official version)
Page: https://openlegislation.uk/eu-regulation-2016-799/annex-1/division-3/division-3.24/division-217
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.