Document ID: chunk:federal_register_of_legislation:F2006L03060:body:0:p11
Version: federal_register_of_legislation:F2006L03060
Segment Type: other
Provision Reference: 
Character Range: 30434–33445

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 (100o 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 38.3.2 (general test conditions) or by the calculation based on data for 'Approved' components in clause 38.4.4, to meet the requirements of clause 38.2.4.3 (parking brake effectiveness), and shall be deemed satisfactory if clause 38.3.6.1.1 or clause 38.3.6.1.2 is met.

38.3.6.1.1.              The 'Parking Brake System 38/00' shall be able to meet the requirements of clause 38.2.4.3 (18 per cent gradient) for a 5 minute period in each direction with the force required to actuate the parking brake not exceeding 685 N in the case of a foot operated brake and not exceeding 590 N in the case of a hand operated brake. 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