# Council Regulation (EEC) No 3821/85 of 20 December 1985 on recording equipment in road transport, Division 2

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

On installation:
(a) distance travalled:
2 % more or less than the real distance, where that distance is at least one kilometre;
(b) speed:
4 km/h more or less than the real speed;
(c) time:
± two minutes per day, or
± 10 minutes per seven days.

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