Northern Territory Consolidated Regulations Northern Territory Consolidated RegulationsA drawbar-type coupling, or drawbar eye, used on a vehicle built after June 1991 that forms part of a road train must be clearly and permanently marked in accordance with Australian Standard AS 2213-1984 50mm-Pin Type Couplings and Drawbar Eyes for Trailers with:
(a) the name or trademark of its manufacturer; and
(b) its D-value rating.