Document ID: chunk:federal_register_of_legislation:F2007C00493:front:0:p7
Version: federal_register_of_legislation:F2007C00493
Segment Type: other
Provision Reference: 
Character Range: 19291–22408

in accordance with part 10 and clause 14.1 or by the calculation based on data for 'Approved' components in part 19, to have an 'Established Retardation Co-efficient' of not less than 0.18 and to be able to sustain a 'Brake' force required to obtain an 'ERC' of 0.18 for a period not less than 15 minutes.
8.2.                                    The 'Emergency Brake System' may utilise parts of the 'Service Brake System' on the condition that any one failure of a 'Brake Device' in the 'Service Brake System' does not prevent the 'Emergency Brake System' from achieving its performance requirement. For the purpose of this clause, the 'Brakes' and any mechanical linkage connected directly thereto, must be considered as not subject to failure.
8.3.                                    In the case of 'Semi-Trailers', when disconnected from the 'Prime-Mover', the failure of any structure designed to support the front of the trailer must not reduce the effectiveness of the 'Emergency Brake System' to less than half that required by clause 8.1.
8.4.                                    'Emergency Brake Systems' that employ 'Stored Fluid Energy' to hold them in the release position must be provided with an auxiliary release mechanism that is not dependent on fluid energy provided by the tow vehicle. The auxiliary device, control or tool must be attached to the trailer chassis rail, or equivalent structure, in an inconspicuous position forward of the forward most 'Axle' on the rear 'Axle Group' on the right hand side of the trailer.
9.                                          PARKING BRAKE SYSTEM
9.1.                                    The 'Parking Brake System 38/...' must be independent of the 'Service Brake System' except that the brakes and any mechanical system attached directly thereto may be common.
9.2.                                    The 'Parking Brake System 38/...' must be able to be applied by means of a single 'Control' and once applied, must be able to be held in position by purely mechanical means.
9.3.                                    It must not be possible to release the Parking Brake unless a means of immediately reapplying it is available.
9.4.                                    The parking brake must operate when the 'Supply Line' energy level drops below 0.24 'E' (155 kpa). The provisions of clause 9.3 do not apply to the auxiliary release mechanism required by clause 8.4 but the other provisions of clause 8.4 must apply.
9.5.                                    Additional parking brake facilities are permitted provided that the requirements of clauses 9.2, 9.3 and 9.4 are met.
9.6.                                    Each 'Unique' trailer 'Parking Brake System 38/...' must be shown to be capable of holding the trailer stationary on an 18 percent gradient in either direction by either :
9.6.1.                              test in accordance with part 10 and clause 15.1; or
9.6.2.                              test in accordance with part 10 and clause 15.2 ; or
9.6.3.                              by the calculation based on data for 'Approved' components