Document ID: chunk:federal_register_of_legislation:F2010C00153:body:0:p6
Version: federal_register_of_legislation:F2010C00153
Segment Type: other
Provision Reference: 
Character Range: 17932–21074

in the longitudinal median plane of the towing vehicle for at least 2 million cycles.  The frequency is not to exceed 35 Hz, and must be chosen so as not to coincide with any natural frequency of the system.
12.3.3.2.                    Over 3.5 tonnes 'ATM' – 'D-value' and 'V-value' rated Dynamic Testing
12.3.3.2.1.              Horizontal alternating force of minimum  (kN)  +/-  0.6 x 'Coupling' 'D-value' (kN) acting in a line parallel to the ground and in the longitudinal median plane of the towing vehicle and a vertical alternating force of minimum (kN) static vertical 'Coupling' load +/-  (0.6 x 'Coupling' 'V-value' (kN)) acting vertically for at least 2 million cycles.  The frequency is not to exceed 35 Hz, and must be chosen so as not to coincide with any natural frequency of the system.

 The static vertical 'Coupling' load (kN) = 9.81 x S

 where: S = 'ATM' - 'GTM' (tonnes).

12.3.3.2.2.              The horizontal and vertical alternating forces must be sinusoidal in shape and must be applied asynchronously so that the difference in their frequencies shall be between 1% and 3%.
12.4.                                Marking
12.4.1.                          Up to 3.5 tonnes 'ATM'

         Both parts of a 'Coupling' specifically designed for use between LA, LB, LC, LD category and sub category LEM towing vehicles and trailers up to 750kg 'ATM', or specifically designed for use between towing vehicles and trailers up to 3.5 tonnes 'ATM' must be marked with the following information:

12.4.1.1.                    The 'Coupling' manufacturer's name or trademark; and
12.4.1.2.                    the maximum allowable trailer 'ATM' and its units of measurement, kg for an 'ATM' up to 750 kg and tonnes otherwise), at which the 'Coupling' is rated; and
12.4.1.3.                    the words "use with model (identified model)".
12.4.2.                          Over 3.5 tonnes 'ATM'

         Both parts of the 'Coupling' specially designed for use between towing vehicles and trailers over 3.5 tonnes 'ATM' must be marked with the following information:

12.4.2.1.                    The 'Coupling' manufacturer's name or trademark; and
12.4.2.2.                    the words "use with model (identified model)"; and
12.4.2.3.                    either the rated 'D-value', or the rated 'D-value' and 'V-value' (kN).
12.4.3.                          All markings must be stamped, moulded or printed with letters not less than 2.5mm high and must be visible when the 'Coupling' is installed and connected. The markings may be on a metal plate that is permanently affixed to the 'Coupling' or to the vehicle adjacent to the 'Coupling'.
13.                                      'TOWBARS'
13.1.                                Up to 3.5 tonnes 'ATM'

         For vehicles with a maximum rated towing capacity of up to 3.5 tonnes 'ATM', the 'Towbar' towing bracket, towbar attachment and vehicle structure must comply with the requirements of AS 4177.1 - 2004 Towbars and towing brackets.

13.2.                                Over 3.5 tonnes 'ATM'

         For vehicles with a maximum rated towing capacity of over