# The Road Vehicles (Construction and Use) Regulations 1986, Paragraph 6

Extent: E+W+S

(1) The motor vehicle comprised in the articulated vehicle must be being used for the conveyance of a loading unit as part of an intermodal transport operation, the loading unit being on a journey—
(a) to a railhead or water transport terminal from which the loading unit is, as part of the operation, to be transported in a relevant manner by railway or waterborne transport pursuant to a relevant contract made before the journey began; or
(b) from a railhead or water transport terminal to which the loading unit has, as part of the operation, been transported in a relevant manner by railway or waterborne transport.
(2) If the loading unit is a bi–modal vehicle, the semi–trailer comprised in the articulated vehicle must be the bi–modal vehicle in its semi–trailer mode.
(3) If the loading unit is a relevant receptacle, the relevant receptacle must be being carried on the semi–trailer comprised in the articulated vehicle.
(4) There must be carried in the cab of the motor vehicle a document—
(a) if the vehicle is on a journey to a railhead or water transport terminal, specifying the railhead or water transport terminal, the date the contract was made and the parties to that contract;
(b) if the vehicle is on a journey from a railhead or water transport terminal, specifying the railhead or water transport terminal and the date and time at which the loading unit was collected from that railhead or water transport terminal.

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Source: https://www.legislation.gov.uk/uksi/1986/1078/schedule/n17/paragraph/6 (the official version)
Page: https://openlegislation.uk/road-vehicles-construction-and-use-regulations-1986/schedule-n17/paragraph-6
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.