Document ID: chunk:federal_register_of_legislation:F2025C00113:front:0:p6
Version: federal_register_of_legislation:F2025C00113
Segment Type: other
Provision Reference: 
Character Range: 16396–19619

the inlet to, or in the body of, the brake chamber with the slowest reaction time in each 'Axle Group' (in respect of brake timing as specified in clause 16).
 5.                                 Where a 'Retractable Axle' is fitted, a trailer has a number of 'Configurations'.  Except as per clause 6.19.1, it must be demonstrated by physical testing or by calculation as described in the appropriate sections of this rule that in each 'Configuration', the trailer complies with the laden condition requirements of this rule for that 'Configuration'.
     1.                           The requirements of this clause 6.19 do not apply to the Service Brake Actuation Time Tests as described in clause 16.1.
     2.                           The laden condition for 'Configurations' with the 'Axle' retracted must be considered to be when the 'Axle Group' is laden to the 'Prescribed Transition Mass' for the 'Configuration' being considered.
     3.                           As according to ADR 43/…, the trailer must automatically change its 'Configuration' at the 'Prescribed Transition Mass' by lowering an 'Axle', the automatic system for lowering the axle may be rendered inoperative, for the purpose of demonstrating compliance with the requirements of this clause.
     4.                           When determining the Park Brake Effectiveness either by test as in clause 15 or by calculation as in clause 20, the 'Aggregate Trailer Mass' is to be multiplied by the ratio of the 'Prescribed Transition Mass' for each 'Configuration' divided by the 'Group Gross Axle Load Rating'.
     5.                          When determining the Emergency Brake Effectiveness either by test as in clause 14 or by calculation as in clause 19, the 'Gross Trailer Mass' is to be multiplied by the ratio of the 'Prescribed Transition Mass' for each 'Configuration' divided by the 'Group Gross Axle Load Rating'.

 1.                                           SERVICE BRAKE SYSTEM
     1.                                     General Requirements
         1.                               The 'Service Brake System' must be designed so that the braking force can be progressively increased and decreased by means of the 'Control Signal' from the towing vehicle.
         2.                               The 'Service Brake System' must incorporate devices which automatically compensate for any increased movement of its components arising from wear.  Such devices must themselves contain provision for securing them throughout their working range in any position to which they adjust.
         3.                               The combined total energy capacity of energy storage devices incorporated into the 'Service Brake System' must be not less than 8 times the combined maximum energy capacity of the service brakes actuating devices.
             1.                         In the case of compressed air 'Braking Systems', the ratio of air reservoir volume to actuator volume will 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