# Council Regulation (EEC) No 3821/85 of 20 December 1985 on recording equipment in road transport, Division 4: Monitoring driver activities

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

033 This function shall permanently and separately monitor the activities of one driver and one co-driver.
034 Driver activity shall be DRIVING, WORK, AVAILABILITY, or BREAK/REST.
035 It shall be possible for the driver and/or the co-driver to manually select WORK, AVAILABILITY, or BREAK/REST.
036 When the vehicle is moving, DRIVING shall be selected automatically for the driver and AVAILABILITY shall be selected automatically for the co-driver.
037 When the vehicle stops, WORK shall be selected automatically for the driver.
038 The first change of activity to REST or AVAILABILITY arising within 120 seconds of the automatic change to WORK due to the vehicle stop shall be assumed to have happened at the time of vehicle stop (therefore possibly cancelling the change to WORK).
039 This function shall output activity changes to the recording functions at a resolution of one minute.
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041 Given a calendar minute, if DRIVING is registered as the activity of both the immediately preceding and immediately succeeding minute, the whole minute shall be regarded as DRIVING.
042 Given a calendar minute that is not regarded as DRIVING according to the previous requirement 041, the whole minute shall be regarded to be of the same type of activity as the longest continuous activity within the minute (or the latest of equally long activities).
043 This function shall also permanently monitor the continuous driving time and the cumulative break time of the driver.

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Source: https://www.legislation.gov.uk/eur/1985/3821/annex/2/division/III/division/4 (the official version)
Page: https://openlegislation.uk/eu-regulation-1985-3821/annex-2/division-III/division-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.