Paragraph 13 Display of the telephone number
Subject to paragraph 16 where a vehicle is carrying only one of the dangerous goods listed in the Approved Carriage List in a tank, the telephone number shall be displayed—
(a)
at the rear of the vehicle;
(b)
on both sides of—
(i)
the tank,
(ii)
the frame of the tank, or
(iii)
the vehicle; and
(b)
in the immediate vicinity of the orange-coloured panels.