Document ID: chunk:federal_register_of_legislation:F2025C00113:front:0:p14
Version: federal_register_of_legislation:F2025C00113
Segment Type: other
Provision Reference: 
Character Range: 39677–42765

minutes, of the trailer 'Brakes' from an initial speed of V1 km/h to a final speed as calculated by clause 13.2, achieve a calculated 'Established Retardation Coefficient', when tested in accordance with clause 11, at a nominated 'Control Signal' level, of not less than 60 per cent of the value obtained at that 'Control Signal' level for the Service Brake Effectiveness Test required by clause 11 nor less than 80 per cent of the value specified by the lower boundary of Figure 1 at that 'Control Signal' level.  The nominated 'Control Signal' level chosen must not be less than that necessary to produce a calculated 'Established Retardation Coefficient' of 0.45 under the Service Brake test conditions described in clause 11 without prior fade conditioning stops.
     2.                                 The final speed to which the trailer has to be successively braked as part of the brake fade conditioning procedure must be determined from the equation:

 where:
 V1   is the initial speed in km/h;
 V2   is the final speed in km/h;
 Masses and Loads are in tonnes
 1.                                 The temperature (100°C) requirement of clause 10.12 does not apply to the test required by clause 13.1.

 1.                                       EMERGENCY BRAKE SYSTEM EFFECTIVENESS TEST
     1.                                 The 'Established Retardation Coefficient', as determined by clause 11.5 must be determined by a test to the requirements of clause 11 except where clause 14.2 applies, and except that:
              1.             The 'Control Signal' source must be left in the "off" position with no 'Control Signal' being provided to the trailer control line; and
             1.           The energy level in the 'Supply Line' must be reduced to zero (in a 2-line compressed air system this will be the emergency line).
             1.                                 Where the actuation of the 'Emergency Brake System' depends on one or more sources of 'Stored Energy' that are common to the 'Service Brake System', for the purposes of testing for compliance with the requirements of clause 14.1, the trailer energy storage devices must be charged to an energy level no greater than 0.05 'E' above the supply level determined for clause 6.5, or the energy storage device level if higher, at which the 'Emergency Brake System' commences to activate the 'Brakes'.
             2.                                 Wheel-locking at 'Established Retardation Coefficients' above 0.18 is permitted.

 1.                                       PARKING BRAKE EFFECTIVENESS TEST
     1.                                 The 'Parking Brake System 38/...' must be able to meet the requirements of clause 9.6 for a 5 minute period in each direction.
         1.                           The necessary longitudinal force will be considered to have been applied if the sum of the force applied to the trailer towing point and the force due to the effect of gravity on the laden trailer mass, in the direction parallel to the test surface and trailer longitudinal axis, is greater