# Council Regulation (EEC) No 3821/85 of 20 December 1985 on recording equipment in road transport, Division 12: Recording and storing in the data memory

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

For the purpose of this paragraph,
‘ 365 days ’ is defined as 365 calendar days of average drivers activity in a vehicle. The average activity per day in a vehicle is defined as at least six drivers or co-drivers, six card insertion withdrawal cycles, and 256 activity changes. ‘ 365 days ’ therefore include at least 2 190 (co-)drivers, 2 190 card insertion withdrawal cycles, and 93 440 activity changes,
times are recorded with a resolution of one minute, unless otherwise specified,
odometer values are recorded with a resolution of one kilometre,
speeds are recorded with a resolution of 1 km/h.
073 Data stored into the data memory shall not be affected by an external power supply cut-off of less than twelve months in type approval conditions.
074 The recording equipment shall be able to record and store implicitly or explicitly in its data memory the following:

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Source: https://www.legislation.gov.uk/eur/1985/3821/annex/2/division/III/division/12 (the official version)
Page: https://openlegislation.uk/eu-regulation-1985-3821/annex-2/division-III/division-12
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.