Document ID: chunk:federal_register_of_legislation:F2006L03061:body:0:p13
Version: federal_register_of_legislation:F2006L03061
Segment Type: other
Provision Reference: 
Character Range: 36409–39555

components in clause 38.4.2 (service brake fade calculation), to meet the requirements of clause 38.3.4.2.1 (degree of fade) and clause 38.2.2.5 (distribution of fade resistance).

38.3.4.2.                    Service Brake Fade Effectiveness Test

38.3.4.2.1.              The 'Service Brake System' shall, on the next application after not less than 20 successive applications, each not more than 60 seconds after the preceding one, of the trailer 'Brakes' from an initial speed of 60 km/h to a final speed as calculated by clause 38.3.4.2.2, achieve a calculated 'Established Retardation Coefficient', when tested in accordance with clause 38.3.3.2 (service brake effectiveness test), of not less than 60 percent of the value obtained for the service brake effectiveness test required by clause 38.3.3.2 nor less than 80 percent of the value specified by the lower bound of Figure 1.

38.3.4.2.2.              The final speed to which the trailer has to be successively braked as part of the brake fade conditioning procedure shall 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 in tonnes

38.3.4.2.3.              The temperature (100°C) requirement of clause 38.3.3.2.7 shall not apply to the test required by clause 38.3.4.2.1.

38.3.5.                          'Emergency Brake System'

38.3.5.1.                    Each 'Unique' trailer 'Emergency Brake System' shall be shown by either test in accordance with clause 38.3.2 (general test conditions) and clause 38.3.5.2 ('Emergency Brake System' test) or by the calculation based on data for 'Approved' components in clause 38.4.3 ('Emergency Brake System' calculation), to meet the requirements of clause 38.2.3.2 ('Emergency Brake System' retardation).

38.3.5.2.                    The 'Established Retardation Coefficient', as determined by clause 38.3.3.2.5, shall be not less than 0.18 when the 'Emergency Brake System' is tested to the requirements of clause 38.3.3.2 (service brake effectiveness) except where clause 38.3.5.3 applies, and except that:

            (a)  The 'Control Signal' source shall be left in the "off" position with no 'Control Signal' being provided to the trailer control line; AND

            (b)  The energy level in the supply line shall be reduced to zero (in a 2-line compressed air system this will be the emergency line).

38.3.5.3.                    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 38.3.5.2, the trailer energy storage devices shall be charged to an energy level no greater than 0.05 'E' above the supply level determined for clause 38.2.1.5, or the energy storage device level if higher, at which the 'Emergency Brake System'
commences to activate the 'Brakes'.

38.3.6.                          Parking Brake Effectiveness

38.3.6.1.                    Each 'Unique' trailer 'Parking Brake System 38/00' shall be shown by either test in accordance with clause