Document ID: chunk:federal_register_of_legislation:F2025C00113:reg:4:p3
Version: federal_register_of_legislation:F2025C00113
Segment Type: reg
Provision Reference: reg 4 (pt 3/10)
Character Range: 76605–80171

functions which influence brake force distribution.
     3.                            Each 'Unique' trailer 'Service Brake System' must be shown by either testing in accordance with clauses 10 and 11 (excluding clause 11.2) of this standard, or by calculation based on data for 'Approved' components using the formula in clause 17.3.2, to develop an 'Established Retardation Coefficient' of at least 0.45, for at least one 'Control Signal' (measured at the 'Control Line' coupling) not exceeding 0.8 'E' (520 kPa in the case of a pneumatic 'Control Line'), when at 'UTM'.
         1.                     Linear interpolation of data obtained from tests conducted in 'Control Signal' increments not exceeding 0.2 'E' may be used to demonstrate compliance with this clause.
         2.                     Trailers equipped with both pneumatic and electric 'Control Lines' must satisfy the requirements of this clause for each 'Control Line'. In the case of an additional electric 'Control Line', the pressure in the 'Control Line' is the pressure corresponding to the transmitted digital demand value in the electric 'Control Line', according to ISO 11992:2003 including ISO 11992‑2:2003 and its Amd.1:2007.

 1.                                  Example Markings
     1.                            An example of markings for a mechanically controlled device in a trailer fitted with a compressed air 'Brake System' that meets clause 1.1.1 of this appendix is shown below.
Control data  Vehicle loading  Axle No. 2 load at the ground  Inlet pressure   Nominal outlet pressure [kPa]
                               [kg]
                                                              [kPa]
              Laden            7000                           600              600

              Unladen          2000                           600              240

 1.                            An example of markings for an air pressure controlled device in a trailer fitted with a compressed air 'Brake System' that meets clause 1.1.2 of this appendix is shown below.
Control data                Vehicle loading  Axle No. 2 load at the ground  Suspension Pressure [kPa]  Nominal outlet pressure [kPa]
                                             [kg]
Inlet pressure [kPa]   600  Laden            7000                           300                        600

                            Unladen          2000                           100                        240

APPENDIX 2

    Performance and installation requirements for 'Antilock Systems' fitted to trailers with an 'ATM' greater than 4.5 tonnes

 1.                                  Performance requirements
     1.                            The 'Brake System' of trailers equipped with an 'Antilock System', must:
            1.             Comply with the requirements of clauses 7.1.3 to 7.1.8 of this standard with the 'Antilock Systems' operational and in the event of any one electrical failure of the 'Antilock System'; and
            2.             Be capable of developing, including by actuation through a 'Control Line' connected to a towing vehicle, an 'Established Retardation Co-efficient' of at least that required for the 'Emergency Brake System' in clause 8 of this standard, in the event of any one failure of the 'Antilock System'.
            1.                            At speeds exceeding 15 km/h the wheels on the 'Axle(s)' specified in clause 2.1 of this appendix must remain unlocked when a 'Control Signal' of 1.0 'E' (650 kPa) is suddenly applied from an initial speed of 40 km/h +5