(1) In this part:
"gross road train mass rating", for the hauling unit of a road train means—
(a) for a road train with a gross road train mass of not more than 42.5t—the GCM of the hauling unit; or
(b) in any other case—the lighter of the following:
(i) the GCM of the hauling unit;
(ii) the gross road train mass determined by the road transport authority;
(iii) the capacity of the tow coupling, or fifth wheel coupling of the hauling unit, worked out under the Road Transport (Vehicle Registration) Regulation 2000 , schedule 1, part 1.13 (Mechanical connections between vehicles);
(iv) the maximum gross mass of the drawing vehicle mentioned in a 3rd edition ADR.
(2) In this section:
3rd edition ADR —see the Road Transport (Vehicle Registration) Regulation 2000 , schedule 1, section 1.15.
Note The Road Transport (Vehicle Registration) Regulation 2000 , sch 1, s 1.15, defines 3rd edition ADR as a national standard incorporated in the document described as the Australian Design Rules for Motor Vehicles and Trailers, Third Edition published by the Federal Office of Road Safety of the Commonwealth Department of Transport and Regional Development.