Document ID: chunk:federal_register_of_legislation:F2006L03060:body:0:p8
Version: federal_register_of_legislation:F2006L03060
Segment Type: other
Provision Reference: 
Character Range: 21931–25147

J 840c - "Test Procedures for Brake Shoe and Lining Adhesives and Bonds' (May 1971), and SAE J 998 "Minimum Requirements for Motor Vehicle Brake Linings" (January 1968), or other international standards.

38.3.1.3.4.              Submissions for compliance approval based in part on a previously approved trailer shall be in relation to an approval based on a complete submission of either test or calculation data.

38.3.2.                          General Test Conditions - Road Tests

38.3.2.1.                    The ambient temperature at the test site shall be greater than 0 and less than 40o C.

38.3.2.2.                    All road tests shall be conducted with tyres fitted of the size specified by the 'Manufacturer' as original equipment and shall be inflated to pressures not less than those recommended by the 'Manufacturer'.

38.3.2.3.                    Braking tests shall be carried out on approximately level surfaces. Where the levels are unsurveyed, the test shall be completed in both directions, the brakes being applied over the same section, and the two results averaged to determine the final result. Where the difference in start and finish elevations for a brake test, expressed as a percentage of the stopping distance, is shown, the brake test need only be completed in one direction and the result corrected for any difference in elevation exceeding 1 percent.

38.3.2.4.                    The wind speed difference between two tests in opposite directions, or against the direction of travel in the case of a single brake test, shall not exceed 15 km/h.

38.3.2.5.                    The towing vehicle used to facilitate the tests shall be of a type normally employed to tow the particular trailer under test and shall have enough power to attain the initial speed required for the specified braking tests.

38.3.2.6.                    All road tests shall be conducted with the trailer loaded to 'MLTM' and energy storage devices charged to 'Normal Minimum Energy Level', unless otherwise required by this Rule.

38.3.2.7.                    The test surface shall be either concrete or bitumen pavement and shall be free from loose material.

38.3.2.8.                    No towing vehicle braking system or other contrived means shall contribute to braking effort, and the towing vehicle engine shall be declutched or neutral engaged, during the braking tests required by this Rule.

38.3.2.9.                    The 'Brakes' shall be burnished before conducting any effectiveness tests according to the brake manufacturer's recommended procedures.

38.3.2.10.                The 'Brake System' shall be adjusted in accordance with the brake manufacturer's recommendations before performance tests are conducted.

38.3.2.11.                The performance requirements shall be met with no deviation of the vehicle from its course greater than 300 millimetres.

38.3.3.                          Service Brake Effectiveness

38.3.3.1.                    Each 'Unique' trailer 'Service Brake System' shall be either tested in accordance with clause 38.3.2 (general test conditions) and clause 38.3.3.2 (service brake effectiveness test) or be shown by calculation,