Paragraph 4
The drawing vehicle and trailer must each be carrying a relevant receptacle as part of a combined transport operation, each such receptacle being on a journey—
to a railhead from which the relevant receptacle is, as part of the operation, to be transported in a relevant manner by railway pursuant to a relevant contract made before the journey began;
from a railhead to which the relevant receptacle has, as part of the operation, been transported in a relevant manner by railway; or
to a harbour from which the relevant receptacle is, as part of the operation, to be transported by sea pursuant to a relevant contract made before the journey began; or
from a harbour to which the relevant receptacle has, as part of the operation, been transported by sea.
There must be carried in the cab of the drawing vehicle a document or documents—
if the vehicle is on a journey to a railhead, specifying the railhead, the date the relevant contract was made and the parties thereto;
if the vehicle is on a journey from a railhead, specifying the railhead and the date and time at which the receptacles were collected from that railhead;
if the vehicle is on a journey to a harbour, specifying the harbour, the date the relevant contract was made and the parties thereto; and
if the vehicle is on a journey from a harbour, specifying the harbour and the date and time at which the receptacles were collected from that harbour.