Document ID: chunk:federal_register_of_legislation:F2025C00113:front:0:p7
Version: federal_register_of_legislation:F2025C00113
Segment Type: other
Provision Reference: 
Character Range: 19375–22373

be taken as being the ratio of energy capacity.
             2.                         The volume of an actuator (brake chamber) of a type specified in Table 2 is taken as being either the rated volume listed in this table or the actual volume of the actuator at the maximum travel of the actuator piston/pushrod, whichever is lower.
             3.                         The volume of an actuator not listed in Table 2 is the actual volume of the actuator at the maximum travel of the actuator piston/pushrod.
         4.                               The response time, as measured in accordance with clause 16, and when rounded to the nearest tenth of a second, must not exceed 0.4 seconds, at:
             1.           any brake actuator of any 'Axle Group' on the trailer; and
             2.           any rear pneumatic 'Control Line' coupling for towed trailers.
         If the figure representing the hundredth is five or more, the response time shall be rounded up to the next higher tenth.
 1.                               In the case of a trailer designed for use in 'Road Train' combinations and equipped to tow another trailer, including any such 'Converter Dolly', the release time, as measured in accordance with clause 16, must not exceed 0.65 seconds, at any rear pneumatic 'Control Line' coupling for towed trailers.
 2.                               At least one 'Axle' in each 'Axle Group' of each 'Unique' trailer 'Service Brake System' must be shown to commence to develop a braking force, at a 'Control Signal' (measured at each 'Control Line' coupling) not exceeding 0.154 'E' (100 kPa for a pneumatic 'Control Line' and the equivalent digital demand value in the case of any electric 'Control Line'), when at 'UTM' with the energy storage devices charged to the 'Nominal Minimum Energy Level'.
     1.                         For the purpose of this clause, an 'Axle' is deemed to have commenced to develop a braking force, when the total static brake torque for the axle concerned reaches the lesser of:
             1.           100 N.m; or
             2.           1 per cent of the product of the static vertical load (N) on the 'Axle' concerned and the rolling radius of the tyres (m) fitted to the wheels, at 'UTM'.
             1.                         Compliance with this clause may be shown by:
             1.           Lifting the wheels of the 'Axles' of each 'Axle Group' above the ground, so they can be freely rotated by hand when the pressure in the 'Control Line' is 0 kPa;
             2.           Setting any 'Variable Proportioning Brake System' (including an electronic load proportioning system) to the 'UTM' operating condition, without increasing the torque required to rotate the wheels; and
             3.           Gradually increasing the 'Control Signal' (measured at the 'Control Line' coupling) until the total torque required to begin to rotate the wheels/hubs of at least one 'Axle' in each 'Axle Group', reaches the lesser of: