Document ID: chunk:federal_register_of_legislation:F2025C00113:front:0:p2
Version: federal_register_of_legislation:F2025C00113
Segment Type: other
Provision Reference: 
Character Range: 3293–8082

EMERGENCY BRAKE SYSTEM CALCULATION..................22
20. PARKING BRAKE CALCULATION..............................23
21. RESPONSE AND RELEASE TIMEs FOR TRAILERS FITTED WITH 'APPROVED' 'CONTROL SYSTEMs'              24
22. SPECIFICATION OF BRAKE SYSTEM COMPONENTS..............24
23. ALTERNATIVE STANDARDS...................................28
APPENDIX 1.........................................................35
APPENDIX 2.........................................................37
APPENDIX 3.........................................................38
APPENDIX 4.........................................................40
Endnotes.............................................................44

 1.                                           LEGISLATIVE PROVISIONS
     1.                                     Name of Standard
         1.                               This Standard is the Vehicle Standard (Australian Design Rule 38/05 – Trailer Brake Systems) 2018.
         2.                               This Standard may also be cited as Australian Design Rule 38/05 – Trailer Brake Systems.

 2.                                           FUNCTION
     1.                                     The function of this vehicle standard is to specify requirements for braking of trailers under both normal operating and emergency conditions.
     2.                                     Compliance can be demonstrated by road testing and/or calculations based on data for 'Approved' components.

 3.                                           APPLICABILITY
     1.                                     This standard applies to category T vehicles with a 'Gross Trailer Mass' exceeding 750 kg from the dates set out in clauses 3.1.1 to 3.1.2 and the table under clause 3.3 below (except those trailers designed for use behind a drawing vehicle with a maximum speed less than 50 km/h).
         1.                               1 July 2019 for all new model vehicles.
         2.                               1 November 2019 for all vehicles.
     2.                                     For the purposes of clause 3.1 a "new model" is a vehicle model first produced with a 'Date of manufacture' on or after the agreed date in clause 3.1.1.

 1.                                     Applicability Table
Vehicle Category                   ADR Category Code  UN Category Code*  Manufactured on or After  Acceptable Prior Rules
Moped 2 wheels                     LA                 L1                 not applicable
Moped 3 wheels                     LB                 L2                 not applicable
Motor cycle                        LC                 L3                 not applicable
Motor cycle and sidecar            LD                 L4                 not applicable
Motor tricycle                     LE                 L5                 not applicable
Passenger car                      MA                 M1                 not applicable
Forward-control passenger vehicle  MB                 M1                 not applicable
Off-road passenger vehicle         MC                 M1                 not applicable
Light omnibus                      MD                 M2                 not applicable
Heavy omnibus                      ME                 M3                 not applicable
Light goods vehicle                NA                 N1                 not applicable
Medium goods vehicle               NB                 N2                 not applicable
Heavy goods vehicle                NC                 N3                 not applicable
Very light trailer                 TA                 O1                 not applicable
Light trailer                      TB                 O2                 1 July 2019**             /03, /04
Medium trailer                     TC                 O3                 1 July 2019**             nil
Heavy trailer                      TD                 O4                 1 July 2019**             nil

* The category code may also be in the format L1, L2, L3 etc.
** See clause 3.1.

 1.                                           DEFINITIONS
     1.                                     For vehicle categories, definitions and meanings used in this standard, refer to:
         1.                               Vehicle Standard (Australian Design Rule Definitions and Vehicle Categories) 2005; and
         2.                               Definitions in clause 1 of APPENDIX 3 of this standard.

 2.                                           DESIGN REQUIREMENTS FOR TRAILERS UP TO 4.5 TONNES 'ATM'
     1.                                     Every trailer must be equipped with an efficient 'Service Brake System' which, with the exception of trailers equipped with an 'Over-run Braking System', must be designed so that the