# Council Regulation (EEC) No 3821/85 of 20 December 1985 on recording equipment in road transport, Division 24: Markings

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

168 If the recording equipment displays the vehicle odometer value and speed, the following details shall appear on its display:
near the figure indicating the distance, the unit of measurement of distance, indicated by the abbreviation ‘ km ’ ,
near the figure showing the speed, the entry ‘ km/h ’ .
The recording equipment may also be switched to display the speed in miles per hour, in which case the unit of measurement of speed shall be shown by the abbreviation ‘ mph ’ .
169 A descriptive plaque shall be affixed to each separate component of the recording equipment and shall show the following details:
name and address of the manufacturer of the equipment,
manufacturer's part number and year of manufacture of the equipment,
equipment serial number,
approval mark for the equipment type.
170 When physical space is not sufficient to show all abovementioned details, the descriptive plaque shall show at least: the manufacturer's name or logo, and the equipment's part number.

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Source: https://www.legislation.gov.uk/eur/1985/3821/annex/2/division/III/division/24 (the official version)
Page: https://openlegislation.uk/eu-regulation-1985-3821/annex-2/division-III/division-24
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.